Dynamo - Scheduling multiple categories

[Jonathan.Olesen]

This entire post is right up your alley:

Collect Elements in Spaces for Scheduling (ERROR with creating BOUNDING BOX for SPACES)

Incase trying to set parameter values for elements in the active model with data from the link (meaning you’re working in the active document but pulling info from the link), you can try something like this: [Room%20element%20is%20in%20across%20links]