How to use tour_edithelper.xml ?

You can have a look at the usage here:

https://krpano.com/releases/1.20.…s.editmode=true

It basically helps you to visualize the location for hotspots so you can copy/paste these values inside your xml.

Just look in the direction where you want the hotspot to be, click "add info hotspot" and you can see the values on the right. You can then use these values inside your own xml.