update target group

HI

I wanted to know is there any way to update the existing target group.(In Web UI under Marketing Pro)

In detail, I have created a target group, based on the attributes assigned to bps in the marketing tab page.

In the target group I have got say 10 bps.

Again i have created one more bp and assigned the same attributes to that bp.

Now I wanted to add the newly created bp in to the target group.

Kindly explain me in detail.

Thanks and regards,

Kumar