vx-180 vx-354 talkaround

My ambulance squad has 3 VX-180's which are currently programmed with: CH1 - 155.2050 TX & RX - PL 3B on both TX and RX CH2 - 158.8050 TX (PL 2A) and RX 155.2050 (PL3B) to access a repeater, First, I would like to free up a channel slot (the other 14 are already committed) by enabling the...