This option determines how the time periods condition and the time limit condition are combined and applied.

• If the OR option is selected, sites will be blocked when either condition is met.
• If the AND option is selected, sites will be blocked only when both conditions are met.

Here’s an example to illustrate the difference. Suppose you’ve entered 0900-1700 as a time period and 10 minutes in every hour as a time limit.

If you select within time periods OR after time limit then the sites will be blocked entirely between 9am and 5pm and will also be blocked after browsing them for more than 10 minutes in every hour at other times of the day (i.e., before 9am and after 5pm).

If you select within time periods AND after time limit then the sites will be blocked only after browsing them for more than 10 minutes in every hour between 9am and 5pm and will not be blocked at other times of the day (i.e., before 9am and after 5pm).

Note: If you’ve left either the time periods field or the time limit field blank, then you should select within time periods OR after time limit (otherwise the sites will never be blocked).