The customer can request an appointment and when that date arrives, bring the animal to the grooming to do the service: bath / beauty treatment / ...
But you can also do service without the customer requesting an appointment.
To make a service WITHOUT an appointment
New > Service or View > planning > add new service
To make a new service WITH an appointment
View > Appointments > Click on the appointment > edit the information > start service button
View > Appointments > Click on the start service button
Views > Planning > Click on the appointment > start service
If you do the service, but do not charge it at the moment (because the customer comes later to pick up the animal, or the charges are made at the cash register, etc.), you can leave the service in the "pending" status.
Later, when the customer goes to pay for the service, the service is collected and invoiced.
If in your business, you also sell products, you can collect the grooming service, with products from your store, on the same ticket:
At the bottom of each service, buttons appear that allow you to:
Print the summary document of that service or save it in .pdf format
Edit or modify that service
Finish that service to pay and invoice
Save to collect later that service
You can print the invoice if you want, and alsothe documents you have configured (legal conditions, etc.)
[In step 3 we saw how to configure the documents]
Note: You can see all the sales or invoices generated in the option View > Sales