NAT for 3 ips

Do you speak personal beauty?

The scenario is the following we have a network of 88 ips cameras and in this network we have a mikrotik rb 750 as gateway, and in this network I need to send only 3 cameras to SESP via radio and at the other end of the radio has the SESP firewall.

How do I do this on mikrotik, I’m picking up a little.

Add more than one nat rule with the 3 cameras ip address
/ip firewall nat
add action=masquerade chain=srcnat out-interface=ether1 src-address=192.168.50.1
add action=masquerade chain=srcnat out-interface=ether1 src-address=192.168.50.2
add action=masquerade chain=srcnat out-interface=ether1 src-address=192.168.50.3