The following article provides a description of what the icons in the assessment stage and theme navigator indicate.
The list icon indicates that all responses have been verified as yes in the highlighted stage and theme block.
The pin drop icon indicates that you have visited that stage and theme, on that present day.
With the View Verified Responses toggle activated in the assessment filter, the red dot in the Theme and Stage Navigator indicates any instance where the latest (ad hoc) responses differ from the verified responses.
The red dot will also appear in the bottom right corner of the criteria card where the ad hoc response differs from the verified response.
In the above example, it indicates that the last response (18 Oct 2022), for the applicable criteria, was a no response which was changed to a yes response.