You don't have to play a round but you do have to tap Start Round to get the option to add a custom course. That same Add Course option could potentially be added after tapping the main Course menu option. But I think the idea was to guide the user to use courses already in the PDGA Directory because the data would already be there for calculating ratings for example. As mentioned in my previous post, course related functionality will be one of the main areas for Directory and app upgrades.
Rater of the tossed arc.