Step 1.  Find your customer

Step 2. Click on the customers name. As you will see, you have quite a few options here. For now we will focus on simply Editing the customers details - to continue please click on the Edit icon on the top left hand side (shown in below image).

Step 3. Editing will open booking form, you may recognise this when creating your first booking.  Any changes you need to make to the booking itself in regards to time or covers will be the section on the left, any details specifically to do with the customer will be done on the section on the right. 

If changing service or covers you will need to press the blue search button again to bring up availability.

Please find a short animated version below: