Need help with configuration

Hello, I am in need of help on how to configure my MikroTik RouterBOARD 3011UiAS.

Setup:

RouterBOARD Ether1 → ISP
RouterBOARD Ether2 → LAN switch
RouterBOARD Ether3 → Ubiquiti Rocket M5

Available IPs from ISP: x.x.x.210 - x.x.x.214

x.x.x.210 is used as public IP for my LAN

I want to use rest of the IPs for my other locations using the Rocket M5.

Each location will have its own router with own public IP ( x.x.x.211 - x.x.x.214 )

How do I route x.x.x.211 - x.x.x.214 to Ether3 and is it possible to limit bandwidth per IP ?

Do I need to assign a public IP to the Rocket M5 or can I use a LAN address ?

Thanks