Once you’ve customized what rates are available in your project, you can assign rates to team members.
If you assign one rate to a resource, all of their billable time for that project will be billed at that rate. If you assign a resource multiple rates, they will be able to choose which rate is used for the billable work they carry out in their timesheet.
To assign a billing rate:
A rates bubble displays.
Refer to Setting up a project for billing for information on this.