Under Settings > Tools > Terra Support there are some configuration options to better customize the plugin's behaviour.
In the Wdio Root Paths table you can define the list of wdio root paths that the plugin will recognize. The Terra Wdio Tool Window will use the first one it founds from this list, in the project.
As for the tool window, there is a confirmation dialog upon triggering the deletion of a screenshot. Whether to show it or not can be controlled with the Show confirmation dialog before screenshot deletion checkbox.
Both option is applied on the IDE level, so they are applicable to all open projects.