[Feature request] Group-Viewer feature to drag&drop actors into a group and have them visible in a responsive layout

[PatrickBauer]

[hendelmasad]

I can drag and drop actors into a group sheet. This might be done, not sure about the "responsive layout" thing though. I did notice that we need a delete function of some kind. I added something to a group sheet and the ngot rid of it by dragging it outside the window and releasing the mouse button. It disappeared until I added something new then everything I added and removed before suddenly came back! See this video:

https://screenrec.com/share/gQdLOviywP