TYPO3 Core

TYPO3 installation has 3 groups:

GroupCommon
- Sets common stuffs for groups (Group1 & Group2)
Group1
- Can insert Plugin-X
- Can do other stuffs specific to this group
Group2
- Can't insert Plugin-X
- Can do other stuffs specific to this group

So I set "[Deny] Plugin-X" in "Explicitly allow/deny field values" for Group2
So far so good.

Now I have a special user ChiefEditor that must be able to do what Group1 members AND Group2 member can do.
So I set GroupCommon+Group1+Group2 as groups for ChiefEditor.
But, since I denied Plugin-X for Group2, ChiefEditor can't insert that Plugin-X too.

I think that there's no way to do that cause it's missing an option to "Explicitly ALLOW field values".
And maybe the field title "Explicitly allow/deny field values" should be "Explicitly DENY field values"