RDS Security groups - default only working

Question

I'm new to AWS and RDS. I've combed through help files and other stackflow questions, but can't seem to find out if i'm doing something wrong. When I go to my RDS Instance, I see Security Groups:default( active ) I click default, and it takes me to the SG page, where I create new groups. However, any rules I put in those new groups don't work, only the rules I put in the default group works. In some of the documentation, I see the screenshots and the beside the Security Groups on the instance page, it doesn't list default, but a user created group.

So is there some way to make all the new groups active or a way to change which group has precedence on that Instance page? Or am I going to have to put all my rules in the default group?

Answer 1

Update:

You can now change a RDS security group, see user115813's answer a few pixels under my original answer.

Please feel free to validate his answer instead of mine.

Answer 2

I had the same problem trying to modify security group right from the top-level view of instances. [The Postgres RDS setup has it backwards, having me create the instance and then telling me I have to do the security group thing, saying only "see startup guide" and providing a broken link to that. :)]

Anyway, I finally figured out I had to select the running instance and then under instance actions select "Modify" and then there is a nice friendly widget for changing the security group.