Esoteric Software

[Grab]

Is there any method to see in the Dopesheet only the rotation or traslation, or scale keys, of a group of bones?

[Misaki]

The dopesheet can be filtered to show only the chosen types of properties. Please see this section of the user guide for more details:
Dopesheet view - Spine User Guide: Filters

If you would like to display only a specific group of bones, you can lock the timelines by pressing the lock button on the Dopesheet view after selecting those bones.
Dopesheet view - Spine User Guide: Locked