Thank you for the responses.
@Box, you were able to click on the brown piece once, to select all the sides/faces, for the group. May you please tell me how that was done?
@Geo, it seems the video is saying I should create a group, to prevent the unwanted “fusion” disfigurement.
My main concern, is that in order to make a bore/hole for to represent a bolt, I have to explode the group first. Then to make recreate the group, I’d have to temporarily relocate the brown piece of wood. Is there a way to store the ‘data’ of a group, so I can easily re-create it at a later time? i.e. without having to relocate other ‘unwanted’ group objects.
Future finders of this thread, may find the following video helpful