Add/Remove objects to existing groups

> Currently, to add an object to an existing group you need
> to ungroup the elements first, otherwise they will be
> nested inside another group

No - double-click a group to enter it and any newly drawn object will be added directly to the group, not nested inside another group. Once you have entered a group, you can add, delete and edit any objects inside this group, until you leave it again. Please read <http://tavmjong.free.fr/INKSCAPE/MANUAL/html/Groups.html> for further details.

> Wishlist: Menu commands to add or remove individual objects from an existing group.

This can be easily achieved with the existing commands ( double-click + draw|paste, ctrl-click + delete). How would these commands work from the menu? What needs to be selected (and in which order) before applying the menu command and how is it decided which is the object to be deleted or added, of or to which group?

OTOH what is missing is a command like 'Paste inside group' (see bug #394475).

How about the user selects one or more objects, then goes to the fictional "Add to Group" menu command which causes a subsequent click on a group to select that as the destination group for the selected object(s)?

It's not evident that the way to add objects to groups is to enter inside the group and then draw/paste the objects there.

It's not so much adding or removing from the group, that can be done with a simple cut and paste, but the fact that it's not always clear which group you're editing. Perhaps it may be a better idea to have a keyboard shortcut that turns everything not in the current group to zero opacity temporarily? It's also possible to jump out of one group and into another too easily. It wasn't obvious to me when I "entered" a group that everything I created from that point on was inside the group.

related: https://bugs.launchpad.net/inkscape/+bug/484041