Farmbuyer

I have an Electron 6 receiver in my first twin engine airplane. I have Channel 1 as the master (left throttle) and Channel 5 as the slave (right throttle). Channel 6 is for the flaps that are "Y"ed together. The ailerons are also "y"ed together on Channel 2. I have successfully mixed the two throttles together.

I tried to search and couldn't answer my question which is, "How do I make the 3-position flap switch work to lower my flaps"? I have done it before in Glider mode on another plane (single engine) but I want to set this plane up in Acro mode if I can. What wing type do I use? The flaps only travel down.

Thanks,
Greg