Help needed, Timer padlock, reduce tension

Sorry if this is wrong place to ask, new here.
Looking for someone to help. I found a post on a website and I thought it was here but couldn't find it. Basically someone had a way of using the electronic padlocks as the main locking device between two fixed points. (bed post to wrist). They did it in such a way that pulling between the two fixed points didn't put tension on the locking shackle on the device. They provided pictures on how they did it and would appreciate if anyone can shed some light into this.

Might it be this topic here: Simple improvement on the Electonic timer padlock?

Yes, that trick listed in the link could be a very good solution for you.
Remember, test it first and if it works, test it again. Just to be sure.

I've been experimenting with these. A metal Lockout Hasp. So far, lots of fun!

https://www.masterlock.com/products/product/420