Cabling is simple, you can do all that you want.
Connection of element:
TRX
3 connections = TX – RX – RX div
Copler DVxx =>
6 connections and 2 antennas = Main & DIV
TX1 – RX1 – RX1 div
TX2 – RX2 – RX2 div
Copler can be divised 2 parts:
Antenna 1 = MAIN
Antenna 2 = DIV
You need M2xx to connect RX and RX div
For 4 TRX, you need WCxx. Wide Band Combiner but you lost 3db.
Exemple for 2TRX: TRX1&TRX2
On antenna 1: TX1 – RX1 – RX2div
On antenna 2: TX2 – RX2 – RX1div
Exemple For 4 TRX: TRX1&TRX2&TRX3&TRX4 With 2 Wide Band Combiner
On Antenna 1: TX1 – TX2 – RX1 – RX2 – RX3div – RX4div
On Antenna 2: TX3 – TX4 – RX3 – RX4 – RX1div – RX2div
When you start a commissioning, choose your configuration the software help you giving the cabling.