Group Attachment Buttons option purpose


Hi, guys! Can somebody explain, what option “Group Attachment Buttons” do? I can’t find any difference between enabled and disabled states.
Screenshots comparing both states will be very appreciated.


Can you elaborate more? Where do yo find this option?

administration - message - Message Attachments - Group Attachment Buttons

Got this on doc:

Group Attachment Buttons : This groups the icons under an expandable menu. Takes up less screen space.

I have seen this doc too, but it doesn’t clarify anything. Maybe you can show it on the screenshots?