Install and set up Telemachus normally. If there are problems with Telemachus itself, it's Not My Problem™. Make sure it works before proceeding.
If Telemachus works, drop everything into
GameData/Telemachus/Plugins/PluginData/Telemachus/. The files should be
recognized without restarting the game. Then, open /telemachus/index.html and
open the module you want (or open them directly). You can add/modify files while
Telemachus is running if you want to add/change stuff.
Row 3 has action groups 1, 2, 3 and 10. You'll probably want to change their names and/or add more groups.
Rows 4 and 5 have Mechjeb SmartASS controls and thus only work with it installed on the ship. (Telemachus cannot yet use 0.90's advanced SAS features.)
Row 6: Stage and abort do exactly what they're supposed to (probably.) "ERR?" lights up when there's problems with a command. This can happen due to connection issues, the game being paused, Mechjeb/Telemachus antenna/power missing, no ship being loaded etc. pp.
As with the readouts, new buttons can be easily added by fiddling with the HTML, the JS code takes care of the rest. Documentation in the file.
navball.html is a navball (may also work as muffin). Uses a texture made by
WhiteOwl,
as I'm probably not able to redistribute KSP's own. Also it looks decent.
The texture (navball.png) can be replaced by any you can find in the linked
thread, or any you made yourself. The readouts are hardcoded and the whole thing
is rather messy, but it should otherwise work.