That is quite easy if you know what you are doing, you need to scan the healing cap, clean it up good (might have rework/ re-mesh it a bit to get nice a smooth surface) and save it at the right height in relation to the top of the implant, then use the library editor to make your own library or do it manually if you prefer.
I want to use dess direct to implant, biohorizon healing cap, Zirkonzahn Modelier. I did some research I can match bio caps on iScan and change the geometry to dess?