Both necks are always on.
Top switch is a 3 way for 12 string pickups (Neck, Both, Bridge)
Bottom switch is a 3 way for 6 string sitar pickups

To make the sitar bridge work, the strings must lay suspended across bridge.
Use of a short tailpiece allows a simple mod only requiring only 2 small holes.

Hidden toggle allows switching of TRS output jack between
I ) Both necks at once output to standard mono instrument
O) Each neck outputs to Tip and Ring respectively (12/6 Sitar)