I know this is a stupid question with an easy answer, but...

Support Basics & Interface
1

I’ve been using Blender for a long time, but I only recently started using it again after a break, and I’ve forgotten how to group objects temporarily and ungroup them… help?

2

In object mode select the objects and Ctrl J. To separate, in edit mode select the vertices Ctrl P.

3

Erm, there’s no way to just group them without joining them? I thought there was.

4

Parent and child. the children are in a group with the parent. Unparenting removes the child object from the group.

5

Thanks very much!

6

And then of course, there’s this little-known part of Blender 2.42:

http://blender.org/cms/Object_Groups.755.0.html

I haven’t tried it but it offers a new approach to solving some problems.