All day clock settings are accessed from the RecallCue app on your phone.
If there is more than 1 message or reminder showing, the day clock will toggle between them every 5 seconds. This can be adjusted and made longer but 5 seconds is the minimum.
To adjust the time each message shows for:
From the home screen click on the menu icon in the upper left hand of the screen
Select "Day Clocks" from the menu
Click on the day Clock you want to edit
Find the "Seconds Between Cues" option and adjust the seconds.
Click the Save button