Hello @Anonymous !
First go to (Hierarchy) choose affect pivot only and move your pivot as you move any object ,, you can turn on snaps to move pivot to specific point on your model
Accepted solution
It sounds like what you want to do is to be able to move a vertex in a direction perpendicular to a face of a meshed object. The object's pivot has little to do with this.
One way to get a coordinate system that is flush with a face is to use a grid. Try the following.
1. Create a grid helper.
2. Align the grid object to the face of interest of the object. (Tools, Align, Normal Align... or Alt-N). I find I get the best results when I click the objects for this process near where I think their centroid [geometric center) is. When you click the grid and then click the face of the mesh you should see a blue line appear perpendicular to the surface of each.
3. Flip the normal if needed and then click OK.
4. The grid coordinate systems should now be active. If it is not select it in the menu at top.
You can now move the vertex perpendicular to the face by clicking and dragging on the Z arrowhead.
Note, you can control whether a grid object or the home (world) coordinate system is active with Tools, Grids and Snaps, ...
This totally cool technique is from the tips'n'tricks thread, where one can lock an object and set a pivot point to a selected snap on that or any other object: .... snap point as transform center:
if this link doesn't go directly to the particular post, search for "snap point as transform center"
be sure to enable several snap options so that appropriate snap points appear as you hover over this or any other object to use as a pivot point.
