Yes, but you have to bake the model from Grasshopper back into Rhino to have the properties that you assigned in Grasshopper show up in the Pollination Rhino model.
To do this, use the PO Model component, connect your edited Honeybee Model, right-click on the PO Model and select “Bake”. Then, you can replace the current Model that you have in Rhino with the one you have edited in Grasshopper.
Note that this workflow is different than what @mingbo and @mostapha have been working on for HVAC, where you’re using Grasshopper to edit the HVAC that is directly linked to the Pollination Rhino model.
You are assigning the loads directly to the Room, essentially overwriting whatever a ProgramType would dictate. If you want to assign a program instead of overwriting the loads, use the HB Apply ProgramType component.
@mingbo can explain how the detailed HVAC works but he’s working on tutorial videos now and it may be most effective to wait for those.
@upawarcannon, I uploaded a new video tutorial that walks you through the updated custom HVAC workflow.
The custom HVACs are only editable if the Grasshopper definition is part of the model.
If I understand the workflow that you have in mind correctly, it is probably easier to create your program types, and other custom resources with Grasshopper, add them to your user library, and then load them from the Rhino interfaces. @chriswmackey recently recorded a video series that shows the process.