modifiers - I'm trying to make a vertex group on one side of a model, but the selection keeps mirroring on the other side too. How do I stop this? - Blender
Mirror selection but maintain current selection - Blender Stack Exchange
modeling - Unmerge Vertex with Mirror Modifier On (Make Two Vertices from One at the Center?) - Blender Stack Exchange
How to use vertex groups in Blender - Artisticrender.com