The first way to add an app from the app gallery to your plan is to browse for an app through the app gallery page on Fulcrum website. 

To start, you will want to make sure that you are logged in to your Fulcrum user account in another browser tab. Browse the apps in the app gallery by industry and/or use case. In the app's details page, you will see a button that says ‘Add this app to (plan_name).’ 

Note: If the button says ‘Start Your FREE Trial Today!,’ then you may need to login or refresh the page.