To edit a block in your email, click on 
You can delete it and move it with these icons:
To add a block, place your cursor between two blocks and click on the “+”
If you click on it, this pop-up will open:
Free text: insert a text block
Link to the event website: insert a link that will redirect your guests to a specific tab of your event’s website
Registration form summary : insert all the information of the registration form
Form data: insert one or several information of the registration form
Activities’ registrations: insert the information regarding your guests’ registration on the different activities present on the registration form
Assigned transport plan: insert information regarding your guests’ transportation (only available with the Workflow module)
Assigned lodging info: insert information regarding your guests’s accommodation information
Note: By clicking on Display Conditions, you can set up differentiated displays as in the registration form