Can I set individual data usage limits for all members who are traveling?

The group owner can set individual data usage limit for each member of the group while purchasing International Roaming.

Once the purchase is complete, the limit can be extended anytime. However, it cannot be reduced. 

But don’t worry, the data usage limit is just a built-in bill protection to help you stay within your data budget. You will be charged only for the number of data packs you use.