Its up to you what you store in Notes. Its useful to store wifi passwords, VAT numbers, door codes, or ping pong competition winners.
To add a note, go to Company profile
Select "Notes" from the left hand side of the screen.
Click "Add note" on the top right hand corner of the screen.
Complete the fields with Title, Information (optional) and add a link (optional).
Note: All employees in the company will be able to see notes.