Messed up Vertex Groups

I accidentally made some vertices belong to groups they aren’t supposed to, so when i move the bones that should move the vertices, the vertices only move half as much as they are supposed to. The obvious solution would be to select the problem vertices, press the button that shows what groups they belong to, and remove them from the groups they’re not supposed to be in.
Unfortunately, I don’t know where that button is.
Does anyone know? Or have a better solution?

xyfbzi (How do you pronounce that?)

Select a vertex…spacebar…select…Group from selection…Shared vertex groups


Shift G…Shared vertex groups

Best of Luck!

Thanks, that worked for one object, but the other one has many unused groups, and so it doesn’t select any other vertices besides the problem one.