While in weight paint mode, ‘ALT + Click’ a bone to see and edit its weights.
If you can’t see the bones overlayed over the mesh (or you want to hide them), you can select the passthrough icon above:
While in weight paint mode, ‘ALT + Click’ a bone to see and edit its weights.
If you can’t see the bones overlayed over the mesh (or you want to hide them), you can select the passthrough icon above: