how to add public IP pool

I just setup RADIUS on my Mikrotik x86. I added a pool for my local users on ether2. I am using both ppp & hotspot to login.

The local pool goes 192.168.88.2-192.168.88.254 and works as the hotspot pool on ether2

My ISP gave me another block of 16 IP xx.xx.xx.xx/28

  1. I want to add xx.xx.xx.xx/28 on ether2
  2. How do I control bandwith for users in xx.xx.xx.xx/28 since they have fixed IP on their PC/router ?
  3. How do I set them to connect without hotspot or PPPoE required.

A diagram would help. Are you routing this new public IP pool via an existing link network to the ISP?

The connectivity goes as below:

Link from ISP (ether1 - Public IP yy.yy.yy.yy)

Local IP pool (ether2 - 192.168.88.1/24 User login through HOTSPOT or PPPoE)
Required (ether2 - xx.xx.xx.xx/28 static public ip pool provided by ISP)

Also, I want bandwidth control AAA for the users of static public IP. How to do it?