Not sure how to tie timing belt

I am attaching image of frame of laser plotter, its X axis belt was tied to X gantry but i do not understand where to tie Y axis timing belt, please refer to image. It should be somewhere in the red box.

Some kits come with flat T nuts. What I have seen is an M5 screw and a flat M5 T nut, with the belt routed underneath the T nut, and the screw through the T nut into the belt to hold it in place.

What was intended with this particular kit, though, I don’t know.


This is a standard Chinese kit for laser plotter or pen plotter

There was not enough space between flat T nut and timing belt, i trimmed the T nut with grinder and it all worked good, thanks for that help that showed me the way.