From the License Information page on the setting portal click on "Modify Subscription" button.  This will display the following form.

Here you are able to select the number of user licenses and the expiry date for your subscription.  The form will calculate the purchase cost as you modify the number of licenses and the expiry date.  Note:  there is a minimum charge of $10 USD.

Once you click on the "Pay Now" button you will be redirected to our payment gateway where you can purchase the subscription using your preferred method.  Once successful payment has been made you will be redirected to the "Settings Portal" and your subscription to Family Browser will be automatically changed to reflect your choices on the previous page.  If Family Browser had become inactive it will now be active again.

Please refer to the following article on how Family Browser subscription charges are calculated:  How much does Family Browser cost?