How to create a docktable tab plugin using and modifying actors parameters (detail panel like)

Hi,
I’m trying to develop a tool that will be used in the UE4 editor. It will generate and place buildings that will be used in game.
I’m currently using a blueprint actor to save all parameters for my generation but i would like to use a dockable tab plugin instead. I managed to create an empty one but i don’t know how to use it, how to replace my actual blueprint actor + detail panel combo (I’m not sure to understand slate). I would like to have my city generation parameters available on this tab (allowing actors to use them).
Thx.