For a detailed explanation, go to YouTube. Plenty of instructional videos there! Because this is too basic to warrant a discussion. πππ€
I can't say anything clear without seeing the track.
match the zones 1 and then match the circles 2 to the center command.


Do you want to match the external profiles?
An easy way is to create a sketch with a center line with the same directions in both parts. Then you can mate the center lines

After that, occult the centerlines.

similar to shew cavalcante above, I use planes to clock the profiles, usually with a parallel mate
Create planes on each part file, then mate the planes.
-OMNICAD