how to connect four different subnet network

RouterOS Beginner Basics
1

my village is having one hill at both side of hill there are four offices 2 office in one side and 2 office other side. all four customer are different. we are putting 120 sector two no on hill top both are back to back covering both valley. now we are using sxt lite 5 at client. distance from sector is 5 km and Rb750 for each office. how 4 different network configure on Rb 750.

Customer A 192.168.1.1=======CPE 192.168.245.3
Customer B 192.168.2.1=======CPE 192.168.245.4
Customer C 192.168.3.1=======CPE 192.168.245.5
Customer D 192.168.4.1=======CPE 192.168.245.6
Sectors 192.168.245.1 and 192.167.245.2

please help me. how to config client RB 750

2

sorry for lac of information. we want connectivity between customer A to C and customer B to D

3

/ip route add dst-address=192.168.X.0/24 gateway=X.X.X.X
(Replace X.X.X.X with appropriate gateway)

On A add a route to 192.168.3.0/24
On C add a route to 192.168.1.0/24

Customer A 192.168.1.1=======CPE 192.168.245.3
Customer C 192.168.3.1=======CPE 192.168.245.5

On B add a route to 192.168.4.0/24
On D add a route to 192.168.2.0/24

Customer B 192.168.2.1=======CPE 192.168.245.4
Customer D 192.168.4.1=======CPE 192.168.245.6

4

thank you i will check