Documentation on System Integration

[HydrallUrakan]

Is your feature request related to a problem? Please describe.
I am attempting to add a value to my actor entities that determines their base number of activations when added to a combat; however, I cannot determine how I would actually do this. The commit logs note that there was a field added to mark the data path, but that seems to have been removed, or at least no longer available.

Describe the solution you'd like
Either a return of the manually-set data path or documentation on where this data needs to live for the module to read it. While adding activations manually through the interface still works, I would like to be able to populate it automatically as well if possible.