User configuration

Hello, I need to configure 30 users with a 20/2 profile, guaranteeing a 50% bandwidth, i need to make a single tariff plan with aggregation 30 and guaranteed speed limit at 50%?
Or a tariff plan with aggregation 1 and Guaranteed speed limit at 50% and apply it to 30 users?
I’ve seen your videos and unfortunately because of the English I did not understand very well, Thanks for the help