Deploy won't work with schedules anymore

Deploy 19.3.83.0 in Enterprise Mode.

I created a package, and attached it to an exisiting schedule (Heartbeat for a PDQ Inventory group). Right-click the package -> Start Schedule -> All packages. Nothing happens.

Turns out I chose the group above where the computers were, and it did not drill down from the containers. I chose Inventory -> Collection -> DOMAIN.NAME.local -> Students -> Student_Computers. All the computers are further organized though into MobileLab1 and MobileLab2.

I had to choose the two groups specifically, instead of the Student_Computers collection in order to deploy.