Click the 'Clients' section in the meny at the top of the page, and then 'New Client'
Fill in the details you want to keep and click 'Create Client'
When this customer returns, you can search for him in your list of clients. Then create a new product, or a new repair, depending on if he has brought this product in before.
Fill in the 'New Product' details and click the button 'Create'
Select 'New Repair' and fill in the description of the issue and details. After you have created the repair, you can add further information like materials and hours. Click 'Create Repair' when you are ready!
You can add comments, for example if the customer calls you asking for more to be done