Create an additional group tab?

Each Spring we get many new hire support tickets for seasonal employees and they overload our Group Tickets tab.  This occurs again towards the end of summer when the seasonal help leaves.  Is there a way to add multiple group tabs to the web help desk and assign these tickets to a separate group. We would also like to do this for long term projects where they would be on a separate tab.

We have experimented using flags and setting the main group to display flags at the bottom of the list.  Any suggestions as I am new to WHD.