ICS & Mikrotik

Hi everyone

Need some help with incorporating Mikrotik into my setup.

So some background info, currently signed up with a WISP.

The antenna is in bridged mode, with Mikrotik Rb750 router, and a TP-Link Router as AP.

The physical config on the Mikrotik are as follows.

ether1 - Uplink
ether2 - Local LAN (DHCP server running)
ether 3 - TP-Link AP

So here is what i want to achieve.
I share the house with a friend of mind, we are currently on a 10MB line speed, 100GB capped monthly data package.

Now i want to equally distribute the data (50gb each) and speeds amongst us and our devices, but i am not sure how to exactly go about this.

I have some basic skills in Mikrotik and know my way around it , but still very much noobie, so anyone that can provide me with some help / advice or point me to some guides and resources to achieve this, i will be forever grateful and will very much be appreciated.

Thanks for reading and in advance.

Kind regards