Although it is possible to track your time without adding any clients, it's a good idea to organise your work in this way if you will be tracking projects for multiple clients.
Creating clients is easy. Just click 'Organize' in the menu bar and then choose 'Clients':
1. If your client list is empty, click the '+ New Client' button. Then the following screen will appear:
2. After you click 'Save', you will be directed back to the clients list screen. You will then see that your newly created client is displayed on the list:
3. If you want to edit your client, just click on the client name and you will go into edit mode.
Note: To track time for a client, you need to assign this client to at least 1 project.