I'm new to Autodesk Forge API. Planning to use it for converting Revit files. But when creating an app inside the Forge console, the system doesn't allow me to select relevant API's to "turn them on" for the app. http://prntscr.com/hgb9ib
While https://developer.autodesk.com/en/docs/oauth/v2/tutorials/create-app/ guide lists all possible API's the service provides.
What could be the issue?