Deactivate Module is an action that sets a module to its deactivated state.
Basics
Use this action to deactivate an activated module. The module you specify as the target of this action must have been previously added to the course and be in an activated state.
The reverse function to Deactivate Module is Activate Module. The two together are the counterpart to the Show Asset and Hide Asset function pair used for Assets and Standard Assets.
The Deactivate Module action is not needed for the Intro Overlay and Outro Overlay modules, because these deactivate themselves by clicking their Okay button
Working with the Deactivate Module Action
Add Deactivate Module Action
In the side panel, click Add Action under the trigger to which you want to assign the action.
From the dropdown ...
...select the Deactivate Module action.
Edit properties
In the side panel, go to the action you are looking for.
In the Select... you will see a list of modules in training - sorted by scenes. Click on the module you want to deactivate and it will be taken as the target of this action.