A section timer can be turned on with or without a quiz being present. To activate the section timer, go to the Browse and Manage Section area on the Manage Course screen as shown below, select the section to add the timer too and then click the Edit Section Details button.
Once in the Edit Section Details area toggle on the Add Section Timer option located towards the bottom of the options listed as shown below. Then enter the number of minutes the timer should be set to and click Save. If a user tries to skip through the section they will not be allowed to advance until the minimum amount of time has been met.