How to apply bandwidth restrictions for a ip host group?

Hi, im trying to apply this guide to my setup but it doesnt work, does anybody if i can set a bandwith limit for a complete group?

As you can see, the limit doesnt work. Anybody has an idea? thanks!

Edited TAGs
[edited by: emmosophos at 11:25 PM (GMT -7) on 20 Apr 2021]