How do you ungroup a unit from a group?

Sorry if this seems like an overly simple question, but I couldn't find anything on the forums/in the hotkeys.

If I assign a tank to group 1, and then accidentally assign them also to group 2 - how do I then ungroup them from group 2?

Cheers!

If you have nothing else in your group 2, select nothing and hit the hotkey to bind smth to group 2
If you have smth in group 2 already, then you overwrote it with that action -> You have to manually select the 'old' group 2 and reassign them without the accidental tank

Wait - there's no way to remove a unit (or selection of units) from a group? I have to re-assign the entire group minus the ones I accidentally added?

Oof

Well, if you had, let's say 20 arties in group 2
And want to bind a tank to group 1 so you only select that tank. But you hit 2 by accident. Then your new whole group 2 is only the tank you selected when accidentally binding a group.

Let's assume you had group 2 selected, selected the tank on top of it with shift and then binded it. So now your group consists out of the 20 arties and the single tank, right?
What you can do then is to select your whole group 2, then simply hit shift+left click the tank to unselect it (At least I hope it was that combination. Hmu if not and I'll take a closer look). Then you can rebind group 2 as only your original group 2 is selected.

There is no "undo" button in FAF, so if you accidentally only binded the tank to group 2, then that's your whole new group 2. Meaning you indeed have to manually rebind the old one.

Ah it's a little disappointing that within all the binds there isn't one for ungrouping, but your solution is a fine workaround so thanks for that, and thanks for the fast responses!

Great to see the community for SC:FA thriving after all these years

You can also enable Group Stealing in the options. If you assign a tank to a new group, it is removed from the previous group.