Step 1: Click on the app in the side menu (the app you want to uninstall)

Step 2: Click on the About tab

Step 3: Click on the cog wheel button

Step 4: Click Uninstall App

Most data associated with the app will remain in the system and return when you install the app again.
If you have pathways that have a step with the uninstalled app, that pathway may stop working.