Move/Snap the manipulator gizmo.

Hi, I use the maya presets in Blender. I want to move and snap the gizmo of the rotation tool to the vertex in the corner, so that I can rotate around that instead of rotation around the center of the selection. Anyone who knows how I can do this?

Select the vertex, position the 3d cursor at this position (Shift+S / Cursor to selected), Set the pivot point to the 3d cursor (options on header or shortcut .) If you are using custom shortcut config then use the shortcut you have set for that option or use the Mesh / Snap menu

Or ensure that vertex is the last vertex selected so it is the active vertex and set the pivot point to Active Element