Looking for Relay Plans

Does anyone have plans for a relay.
Allows you to use 12 Lights off of 6 ballasts.
6 lights per room
2 rooms on opposite cycles
Trying to build one and need Help Please.
DMG

OK did I ask this question correct?
Does anyone even know what I am talking about?
PLZ HLP

For flipping one ballast and two bulbs, you would use a Single Pole Double Throw Relay aka SPDT relay. For flipping two ballasts and four bulbs you would want a Double Pole Double Throw relay, aka DPDT Relay.

The relay can be purchased online at Rockwell Automation for about $30 or $35 depending on if you want the SPDT or the DPDT.

Thank you very much..
I hope this works.
DMG