Settings of KDE Plasma Desktop suddenly disappear

Hi! I aman avid user of activities, so I have a number of different desktops configured with different widgets etc.
But what I cannot figure out is how I can have a different Dock on each activity. Does Latte or Plank offer that?

How does your question relate the the title?

You are right. The connection is not clear.
The fact is that I have set up my different activity desktops with individual launchers many times - only to loose them after every other kernel update.
So I’m looking for a different solution, with docks instead of launchers.