In the Addons section, you have to click on the Insurance which will take you to the dropdown with the list of Insurance that has been pre-applied on the addons section under the Settings Tab.

Step 1:

Step 2: Select the plan.

Step 3: Make Sure with the plan details and proceed further

Note: To Enable the Add on's during the move-in process, Navigate to Setting>>Field Setting>> Add On Move-In  Session.