Hi @silvio3105
The inspector is not the same as properties, it's more like properties+. The big advantage it has is that it can show you the properties of a group, specifically what they have in common. It can also make changes to the selection.
The right click menu always assumes a single object, remember that the "proper" workflow in Electronics like EAGLE is verb-noun. If you select the action you want to perform before you right click on the selection you'll see that at the bottom of the right click menu X:Group. CLicking that will perform the action on the group.
As you may gather this is probably not what you are used to. In EAGLE, once you get up to speed the right click menu is seldom used because you know that you can select the action first and the ctrl+right click to perform the action on the group. Electronics like EAGLE is verb-noun, once you get comfortable with it the workflow is very smooth but it doesn't win any awards for intuition. Like I mentioned I've logged this already, but I hope the above answers give some insight.
Best Regards,

Jorge Garcia
Product Support Specialist for Fusion 360 and EAGLE
Kudos are much appreciated if the information I have shared is helpful to you and/or others.
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