For each Contact in the Shortlist, you can add a small note. This note will show up on the Contact's record.
To show the notes for each Contact on the Shortlist, click on "Details" top right of the page.
To add a note, click on the note icon below the contact's name.
Write the note inside the text box and clock the [v] button to save the note.
To edit the note, simply click on the text and the same text box will allow you to edit the note.
You can hide and show the notes under [Details]