Jig Hardware Question

I have a question about the Hillbilly Track Saw I'm using.

I'd like to add some hardware to each end so that it's easy to slide it together or apart. Something I can lock or unlock at each end where it will slide back and forth along a track or rail or channel depending on which saw I want to use? Currently I just clamp the 2 parts together and unclamp them to adjust it. Can someone please give me some ideas how to do that? Please explain in little words :p

htsducttape.jpg

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Thanks all, and good morning!
 
Shucks you got me. I thought i would escape showing my ignorance with that get out of jail card. This one i leave to others way above my pay grade in aspects such as this.
 
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