On the Project Details or Company Details page, click on Notes & Tasks on the left-hand side of the page.
Under Notes, click + Add Note.
Complete all the fields with an * next to them.
Toggle Visibility to adjust who can see the note.
Select Attach note to related company/contact to create an identical note for a chosen company/contact in addition to the note you have just created.
Search for a note using the Search notes bar on the top right.