Usually, you don't have to do anything with this tab.
Home position: This position must be predefined. I followed the common sense by adapting the "home position" from the Skywatcher Virtuoso manual. The telescope/DSLR must be pointed to North and the vertical degree to your local latitude. You are right that this position can be made configurable in this driver.
Syncing in home position (only in Skywatcher Alt-Az driver): if you start INDI/KStars and your Virtuoso is in home position and parking state when you make a syncing that does not add the point to the alignment model, but it basically "resets the home position" with the encoders. After you unpark your telescope, this option is not available anymore.
Thank you for your reply.
Yes, I am setting the azimuth axis north and the vertical axis the latitude of my environment.
After that, I canceled the park, moved to any star, made a solver & sink and aligned it.
However, until now solver and sink were executed every time it was observed, but I was able to accurately introduce the goal, but solver is the 3rd solver & sink and solver will succeed but sink The mount position shifts greatly afterwards, then the solver does not succeed.