Hey there and welcome to the Plumbing Profits Booking Calendar. All you need to do right now, is just pick a date and time that's suitable for you. If you need more than one appointment, choose the first date and time, and then click on "Pick More Appointments" to choose your 2nd booking time.... then hit continue.
Try and pick a time that you won't have any disruptions eg. other phone calls or messages coming in. You might need to organise to have someone else answer incoming calls for you whilst you're on the call.