To edit any of the icons:
Within the Dashboard Studio, click on any icon to edit that specific icon OR click the ADD NEW BUTTON to add a new icon -
To add or edit the Button Target with your intended URL - click the rride check box & paste the URL into the Button Target field - see example below
Then, click SAVE at the bottom of the pop up.
When you are finished with your changes to the icon & draft in the Dashboard Studio, click the "APPLY TO LIVE DASHBOARD" button.