If you aren't already in the Invoicing Screen, click the Invoicing Tab in the top toolbar. At the top of the screen under Unbilled Items heading, click the filter button. In the filter form, under the By Dates sub-heading, enter a start and end date. Click the Apply button. Notice you can click the plus signs to expand the clients and you will not see any entries falling outside of the date range you selected. If you want to bill all the clients that have hourly billing or reimbursable expenses within this date range you can now click the Create New Bill Batch button. Otherwise, deselect the clients you do not wish to bill and then click the button. Once the system creates the bill batch, you will notice the new bill batch at the bottom of your screen under the Bill Batches Tab in the Accounting Center.
Click the plus sign next to the new Bill Batch that you just created (it will be at the top of the list). The bill batch will open up to show you the clients underneath. You can click the plus sign next to any client to see detailed information on each worker for this client.
At the end of the row containing each client, click the Create Invoice link under the Commands column. Once your invoice is created you can view it in PDF format (click view) and from the PDF file you can print it or save it on your computer. You can also edit the invoice and add additional line items for the client (click Edit). You can also send the invoice to your client by clicking the Email Client link.