Each project can be invoiced based on timesheet hours, percentage complete progress claims or lump sum progress claims. You can alter the invoicing method for each project at any time so you can use all three methods on a single project if you like. You can easily locate the timesheet hours you need to invoice by using the intelligent filter, which allows you to choose various weeks, stages and variations. You can also choose to change the charge out rate for each employee at the invoicing stage, without updating the employees permanently.