Billable items charge clients for custom services, time on projects, or one-time costs, or they can apply custom billing configurations.
The Billable Items tab in the Client Profile contains a list of all a client's billable items and allows you to add time billing.
Add billable items to charge individual clients for custom or unique products, add one-time costs, or use custom billing configurations.
Use time billing, a type of billable item. to charge an individual client for time that your staff spends working on a project.