In order to add the client notes:
Go to the "Quick Sale".
While creating the invoice, you may insert notes for a particular client, as shown below:
Another option for inserting the customer note is:
Go to the "Clients".
Choose the client for whom you want to insert the notes.
Click on client history, as shown below:
4. Click on "Notes".
5. Click on "+ Add", to insert the note.
In order to "edit" and "delete" the client notes:
Go to the "Client History".
Click on "Notes".
Select the note that you want to update or delete.
Click on (...) dots, as shown below:
You can select the option to edit or remove according to your needs.