It would be nice to be able to save filament profile k values by name like on the x1 series printers since the p1 series shouldn’t have any reason not to be able to save these.
If you use Orca Slicer, you can enable pressure advance in the filament settings for each profile you’ve saved and enter your k value there. Someone will correct me if I’m wrong, but I’ve been told by people smarter than me that pressure advance and k value are two names for the same thing.