I have a 2000 f250 with a broken shifter column. The truck is in drive and I’m trying to find a way to put it in park so I can take the key out of the ignition so I can take the cover off and fix it. How to you put the truck in park from underneath? I want a step by step instruction on how to do it.

 

You can get the ignition key cylinder out as long as it's in RUN or ON position. Don't worry about the tranny prnd12 position for now.
Can you attach some pics of exactly what piece is broken so we can see the problem?

 

If you are sure the shift tube is broken, you have a good sized job ahead.

Something you can check, the screws at the bottom of the shift tube at the floor were known for getting loose. That part moves the shift cable. Check them for tightness.

 

 

I have had this problem before but yeah I’m pretty sure it’s the shifter column that’s broken. Bottom after cracked all the way around

 

Different folks use different methods to replace that tube. Your first problem is getting a new one, which after you get it , having done many, I found the better way to replace the tube was to remove the entire steering column and replace the tube on a work bench.

Before blabbing any further, if you can see why the tube broke that is important to prevent the replacement from developing the same problem.
What I found was the tube rotated inside nylon bushings and when rust grew between the tube and bushings the tube shaft would freeze and prevent the tube from rotating.and the force of attempting to shift the tube it breaks.

 

That nylon bushings hanky mentioned is something like this: You mount 2 of them on the tube, and they position between the tube and the steering column housing. With the bushings in place, the tube doesn't even touch or have any contact with the steering column housing (shifter column you mentioned) should never be broken when it doesn't have contact with the tube because the bushings are sandwiched in between and secure by a bracket with 2 star bolts.
If the 2 bushings are gone, of course, metal (the tube) to metal (steering column housing) contact.
If you still want to manually shift your gear to P position you can do that at the shifter cable and range sensor.

 

What I did to prevent recurrence with the replacement tube was to carefully grind a slight spiral in the areas where the tube contacts the nylon bushings and fill those spirals with grease. Makes shifting easier and prevents any rusting.