Cospaces Tour can't open object inspector

I’ve created in Chrome a tour in CoSpaces, uploaded a 360 picture and placed a character inside the world.
When I place an object before my character to partly maske it (like in the video Key Applications: 360° Tours) I can’t open the object inspector.
Normally you open it bij double cliking the object, but that just (like by one click), opens the move tools.
How to open the Object inspector in Tours?