I need subjects to hold a swab under their tongue for 2 minutes while answering a set of questions. I've created a questionnaire file with an initial instruction item to put in the swab, followed by a set of scale response items, then a final instruction item to remove the swab. My concern is that some subjects may take less than two minutes to complete the questions. Is there any way for me to time subjects from when they leave the initial set of instructions and ensure that the final set of instructions does not appear until after 2 minutes have passed? Thank you for your assistance.