This task demonstrates how to set up a time after which the screen is going to advance, i.e. the screen timelimit, and how to show countdown of the remaining time.
We set up the screen timelimit in the Screen tab by adding a Time Limit component. For the countdown, we add a new, empty Object in the Object tab and add a Countdown component to it. In the Coutdown component we indicate the time we wish to display using the countdown in the Show Partial Time Remaining field (note that it can also equal to the total timelimit if you want to show participants entire time they have before that screen progresses).
The screen timelimit and countdown times can both be either fixed to a specified number or bound to another source of data, e.g. a spreadsheet column with various times for each trial. You can find more information about binding to spreadsheet in our Binding Guide.