With Zoho CRM you can add multiple Notes to any record by opening the record, scrolling down past the detailed fields (or hiding the detailed fields by clicking the ... symbol) and dropping your cursor inside the top, empty note field. The NOTE you add is automatically time-tagged and you are automatically identified as the generator of the NOTE.
You can also
add a Title to the note by clicking the "Add a title" link,
add an attachment to the note by clicking the paperclip icon