Open the "Company Settings" and expand the user that you want to setup the quota for.

Company editing (notificaiton setup) - BangDB

Add the quota, start date & end date and click on "Complete".

Company editing (notificaiton setup) - BangDB

The quota will be added for the user.

Company editing (notificaiton setup) - BangDB

Once you're done with your changes. Click on Save Project (Draft).

Changes are now saved locally, in order to save these changes on the app. Click on Save.