bandwidth management

In my office i use static IP address. now i create a proper bandwidth management . My ISP Give me 6Mbps bandwidth . i distribute this bandwidth for 40 user.what can i do now?

How do you want to share it?
Purpose built QoS?
Perfectly balanced per connection?
Round robin of connections trying to make use of it?

You may consider going through this https://mum.mikrotik.com/presentations/US08/janism.pdf

i would probably go with que tree/pcq
But i have no idea what purpose you are trying to reach, try this and see if it works for you.
https://www.youtube.com/watch?v=K06Dy3XCttY