Editing Groups / add or delete a single track?

[kaladun]

Hi
Here's my problem...i've created a group including snare, kick, hihat. Now i want to add also the L+R Overheads.
But how to do this? If i select both Overheads L+R, then use cmd+G, then select the wanted group and press OK,
i get an overwrite, means that now only the Overheads are in the group (snare, kick, hihat is not more in the group).
I tried different things, also to click on the a-z bottom at the left where all the groups are listed, but nothing happens - i dont
get a pop-up menu or something.
I'm sure it must be simple but i really dont find out how to add/delete Tracks from an existing group. The reference guide
describes at page 106 how to editing groups, but doing it like this doesn't work in my case.
Thanks for your help.
BTW: I'm working with PT 6.7 LE

[sonikbliss]

you have to select all the tracks that are already in the group, plus the new ones that you want to add, then do apple G and rewrite the group. Any time you do a group it only saves the tracks that are presently selected.

[kaladun]

ohlala, i knew it must be easy.....thanks a lot sonikbliss to answer my question. Now, i'm really happy again!