All screens in flow showing when share link used

I am new to Figma and unable to figure out how to get only the FIRST screen in a flow to show when someone clicks on the share link. It shows all screens in the flow and you have to click the play button to get it to only show the first screen. This is a problem for user testing, as they can see the whole flow before they start. I cannot find a setting to change to fix this. Any help appreciated.