Default action for entities in picture-glance is more-info, and it is not possible to customize it.
It would be useful to be able to do that as it is possible in the glance card; particularly, in my user case I have a picture-glance that displays the feed from a camera, and I would like to integrate PTZ controls in the picture-glance.
I would be able to use a single click to activate the PTZ control directly.
This is possible. Take a look at the documentation:
tap_action:
action: toggle
EDIT: Should clarify that it’s not possible to change the action on a per-item basis. This tap action is for the total image. If that’s the functionality you are looking for, create a Feature Request.