Multi graft plum planning: need suggestions

[MuddyMess_8a]

@alan

Once you learn to do it at the right time, grafting plums is pretty easy on vigorously growing trees in good light. We could steer you through that, but you shouldn’t attempt it until your base tree has been growing for a season.

I probably messed up this attempt to pose Anyway, the linked topic is supposed to be “How do you determine the right time to graft plums?”