Can you show a view of main breaker box that has only one bus bar on the left that takes the breaker thqp115

Couldn't find you a picture. If the buss is on the left, then the breaker will be perpendicular with the ground, and breaker will have the right side in and then pivot down onto buss. Most breakers are like this. Turn off power to the panel if you can. Be safe.

You must have one, so show us a photo of what you have.

THQP breakers are the half size, and will only plug onto a special busbar, not all GE panels will accept THQP, and many GE panels will not accept THQP in every slot in that panel.

I found it odd they needed a picture of their panel, unless researching for someone else?