On the Job List, choose a job where a note needs to be added. Click the '+' icon on the bottom right corner of the page where the 'Notes' icon appears.
The 'New Note' screen appears where you can start adding data.
Heading - serves as the title of the note
Description - is where you can add the text/contents
Attachment (paper clip icon on the top right corner of the screen) - lets you attach multiple photos in a note.
Note: on future developments, this will also allow you to add files to other formats such as documents, spreadsheets, pdf, etc.
Image icon - allows you to choose an image from the phone's gallery.
Use camera icon - opens your default camera app and allows you to take a photo to be attached directly to the note.
Click the '✓' on the uppermost right corner of the screen to save the note.
Related Article: How to Add Notes to a Job - Console