I'm trying to present participants with an HTML screen for 1 minute before the "Continue" button appears and they're allowed to move on. I tried setting the paramater to (d-60) to test it, thinking that would make the "Continue" button be hidden for 60 seconds. But the "Continue" button never appeared. Is there an easy way to set how long the HTML screen will appear before participants can move on?

At a different point in the experiment (separate questionnaire file), I also want to show participants a series of statements, 1 at a time, and present each statement for 10 seconds before they are allowed to move on. Right now, each statement is set up as a scale response, with a button in the middle of the screen that they click to move on. I'd like that button to be hidden for the first 10 seconds, then pop up so they can click when they're ready to move on. Will the duration function (e.g., "(d-10)") work for this type of item? Or should I format them as instruction items instead?

Thanks!