Three types of actions can be added to a page – launch an activity, launch a live question, and open a link :
1 - Access to your Presentation
Go on the Step 4 of your Session "Presentation", then click on "Create a Presentation".
You'll be able to either import an existing presentation, either to create a new one, from scratch.
To add an action to the page, simply use the 
in the top right of each page
2 - Choose the action you want to add
