diff --git a/chain/views.py b/chain/views.py
index 31a2e114e..ba51bf3fc 100644
--- a/chain/views.py
+++ b/chain/views.py
@@ -940,7 +940,6 @@ def respectSimulator(request):
                     modModification = request.POST.get('modification')
                     modValue = request.POST.get('value')
 
-
                     # check consistency of the graph (necessary levels for the sub branches)
                     if modModification in ["level"]:
                         # modify the value in the simulation tree
@@ -968,8 +967,8 @@ def respectSimulator(request):
                             32: [[33, 9]],  # oversea banking
 
                             # Supression
-                            45: [[46, 3]], # maximum life
-                            48: [[47, 7]], # escape
+                            45: [[46, 3]],  # maximum life
+                            48: [[47, 7]],  # escape
 
                             # Agression
                             44: [[43, 10]],  # accuracy
@@ -990,7 +989,7 @@ def respectSimulator(request):
                             # Core
                             10: [[11, 2]],  # chaining
                             12: [[11, 2]],  # territory
-                        }
+                            }
 
                         if int(modId) in r and int(modValue):
                             for b, lvl in [(b[0], b[1]) for b in r[int(modId)]]:
@@ -1014,8 +1013,8 @@ def respectSimulator(request):
                             33: [[34, 2], [31, 3], [35, 8], [32, 9]],  # travel capacity
 
                             # Supression
-                            46: [[45, 3]], # defense
-                            47: [[48, 7]], # dexterity
+                            46: [[45, 3]],  # defense
+                            47: [[48, 7]],  # dexterity
 
                             # Agression
                             43: [[44, 10]],  # speed
@@ -1030,7 +1029,7 @@ def respectSimulator(request):
 
                             # Core
                             11: [[10, 2], [12, 2]],  # capacity
-                        }
+                            }
 
                         if int(modId) in r:
                             for sb, lvl in [(sb[0], sb[1]) for sb in r[int(modId)]]:
@@ -1042,7 +1041,8 @@ def respectSimulator(request):
                             36: [37, 38, 39],  # strength training
                             38: [39, 36, 37],  # defense training
                             39: [38, 36, 37],  # dexterity training
-                        }
+                            }
+
                         if int(modId) in r:
                             # max the close branch to 10
                             if int(modValue) > 10:
@@ -1058,7 +1058,7 @@ def respectSimulator(request):
 
                         # special case for core
                         r = {
-                            1: [], # weapon armory
+                            1: [],  # weapon armory
                             2: [1],  # armor armory
                             3: [1, 2],  # tempory armory
                             4: [1, 2],  # medical armory
@@ -1066,7 +1066,7 @@ def respectSimulator(request):
                             6: [1, 2, 4],  # drug armory
                             7: [1, 2, 3, 4, 5, 6],  # point storage
                             8: [1, 2, 3, 4, 5, 6, 7],  # laboratory
-                        }
+                            }
 
                         if int(modId) in r:
                             if int(modValue):
@@ -1145,7 +1145,13 @@ def respectSimulator(request):
                     branchesCost[bname][5] = order
 
                 # upgrade key
-                context = {'player': player, 'chaincat': True, "faction": faction, "upgradeTree": upgradeTreeReshaped, "branchesCost": branchesCost, "totalRespect": totalRespect, 'view': {'simu': True}}
+                context = {'player': player,
+                           'chaincat': True,
+                           "faction": faction,
+                           "upgradeTree": upgradeTreeReshaped,
+                           "branchesCost": branchesCost,
+                           "totalRespect": totalRespect,
+                           'view': {'simu': True}}
                 if request.method == 'POST':
                     page = 'chain/content-reload.html' if request.POST.get('change') is None else 'chain/respect-simulator-table.html'
                 else:
diff --git a/templates/chain/respect-simulator-table.html b/templates/chain/respect-simulator-table.html
index 2a8204415..88e2f2ec6 100644
--- a/templates/chain/respect-simulator-table.html
+++ b/templates/chain/respect-simulator-table.html
@@ -22,30 +22,34 @@
 {% load app_filters %}
 
 <script>
-    $(document).ready(function() {
-
-        $.tablesorter.addParser({
-            // set a unique id
-            id: 'dataVal',
-            // check if cell value has a numerical value
-            is: function(s, table, cell, $cell) {
-                return !isNaN($cell.attr("data-val"));
-            },
-            // format data for normalization
-            format: function(s, table, cell, cellIndex) {
-                return parseInt($(cell).attr("data-val"));
-            },
-            // set type, either numeric or text
-            type: 'numeric'
-        });
-
-        $("#chain-tree-sum").tablesorter({cssAsc: 'up', cssDesc: 'down', sortList: [[3,0]]});
-        $("#chain-tree").tablesorter({headers: {5: {sorter: 'dataVal'}, 6: {sorter: 'dataVal'}}, cssAsc: 'up', cssDesc: 'down', sortList: [[2,0]]});
-    });
+    // $(document).ready(function() {
+    //
+    //     $.tablesorter.addParser({
+    //         // set a unique id
+    //         id: 'dataVal',
+    //         // check if cell value has a numerical value
+    //         is: function(s, table, cell, $cell) {
+    //             return !isNaN($cell.attr("data-val"));
+    //         },
+    //         // format data for normalization
+    //         format: function(s, table, cell, cellIndex) {
+    //             return parseInt($(cell).attr("data-val"));
+    //         },
+    //         // set type, either numeric or text
+    //         type: 'numeric'
+    //     });
+    //
+    //     $("#chain-tree-sum").tablesorter({cssAsc: 'up', cssDesc: 'down', sortList: [[3,0]]});
+    //     $("#chain-tree-sum").tablesorter({sortList: [[3,0]]});
+    //     $("#chain-tree").tablesorter({headers: {5: {sorter: 'dataVal'}, 6: {sorter: 'dataVal'}}, cssAsc: 'up', cssDesc: 'down', sortList: [[2,0]]});
+    //     $("#chain-tree").tablesorter({headers: {5: {sorter: 'dataVal'}, 6: {sorter: 'dataVal'}}, sortList: [[2,0]]});
+    // });
 </script>
-
 <table class="center chain-tree-sum sticky">
     <thead>
+        <tr>
+            <th colspan="6">Faction wise summary</th>
+        </tr>
         <tr>
             <th></th>
             <th colspan="2">Current state</th>
@@ -76,6 +80,9 @@
 <br>
 <table id="chain-tree-sum" class="center-medium chain-tree-sum trshadow">
     <thead>
+        <tr>
+            <th colspan="10">Branch wise summary</th>
+        </tr>
         <tr>
             <th></th>
             <th colspan="3">Current State</th>
@@ -113,11 +120,13 @@
         {% endfor %}
     </tbody>
 </table>
-
-<hr class="sep">
+<br>
 
 <table id="chain-tree" class="center-medium chain-tree">
     <thead>
+        <tr>
+            <th colspan="11">Simulator</th>
+        </tr>
         <tr>
             <th></th>
             <th></th>
@@ -179,3 +188,16 @@
         {% endfor %}
     </tbody>
 </table>
+
+<hr class="sep">
+<p>
+    To do a simulation, modify the <b>order</b> of a branch or the <b>level</b> of an upgrade in the table above by clicking on the corresponding number (available modifications are in bold).<br>
+    Colored numbers will show you the difference between the current state and the simulation.
+<ul>
+    <li>If you modify the <b>order</b> of an upgrade, the whole branch order will be modified and, if needed, the order of another branch will be swap to two identical orders.</li>
+    <li>If you modify the <b>level</b> of an upgrade, the order of all the branches will be modified to <span class="valid">minimize the respect used</span> and, if needed, the levels of other upgrades of the branch will be <span class="valid">set to their minimal required values</span>.</li>
+</ul>
+</p>
+<p><i class="fas fa-toilet-paper"></i>&nbsp;&nbsp;You can reset to simulation to the current state by clicking on the reset button on the top right.
+</p>
+<p><span class="warning">Warning:</span> the simulations are saved on the fly for the faction (not for a member). Modifications of the upgrades by two members at the same time can lead to strange behaviors!</p>
diff --git a/templates/chain/respect-simulator.html b/templates/chain/respect-simulator.html
index e5c43b2e3..41a827e22 100644
--- a/templates/chain/respect-simulator.html
+++ b/templates/chain/respect-simulator.html
@@ -21,7 +21,7 @@
 {% load mathfilters %}
 {% load app_filters %}
 
-<h2 class="title">Upgrades Respect Simulator<span id="faction-tree-reset" class="flush-right"><a href=""><i class="fas fa-toilet-paper"></i>&nbsp;&nbsp;Reset faction tree</a></span></h2>
+<h2 class="title">Upgrades Respect Simulator<span id="faction-tree-reset" class="flush-right"><a href=""><i class="fas fa-toilet-paper"></i>&nbsp;&nbsp;Reset simulation</a></span></h2>
 <div id="faction-upgrade-tree" class="module">
     {% include "chain/respect-simulator-table.html" %}
 </div>