Sorry Old Timer. Lost power and the browser earlier (about noon my time) and could only send this just now.
The old service manuals used to show it. Both my Chilton's and Hayne's have a quick section on it.
But basically, if your column is stock it will have a half-pipe welded to it's outer surface under the hood. With the shift rods still disconnected from the trans, this tube is for inserting a drill-bit into (something like 5/32" or whatever is a good tight fit) and then line up both of the shift arms into their neutral positions until the drill bit passes through the alignment holes in each arm. This simply holds them in place while you mess around with the rod adjustments.
Then you verify that both of the shift arms/levers on the side of the transmission are in their neutral positions. If the trans is in good shape, only one can be out of Neutral at a time anyway, but make sure they're both in Neutral.
Then you adjust each rod's adjusting pin until it lines up easily with the hold in the lever arm.
Clip them in place, remove the drill bit and (hopefully and in theory...) you're done.
If everything is still in reasonably good shape, or if new, you should have good clean tight shifts between gears. Check it out and see.
Paul