First create the Daylight and Night Rates (see Add billing plans section).
Select Daylight rate as the default billing plan for every user or a group. Then create a new rule (see Rule setup section), set up Rate as the Object and Change to as the action. In the Parameters drop-down list, select the Night rate ( illustration).
On the Time and Holidays page, mark the area from Monday through Sunday, from 9 PM to 9 AM. Apply this rule to all users. The setup rule will switch the default Daylight rate to the Night rate ( illustration).
Now create the rule which performs the switch back. The rule should change the current rate to the Daylight rate. On the 'Time and Holidays' page, mark the area from Monday through to Sunday, from midnight to 9 AM and from 9 PM to midnight ( illustration).
Like in the case considered above, create two rates first (Internal and External). Assign the most frequently used rate (say, External) to all users as the default rate.
Create a new rule with Rate as the Object and Change to as the Action. In the drop-down list of parameters, select the External rate. On the 'Filters' page of the dialogue window, in the 'URL list' field, list the mask websites, e.g. (*provider.com*, *yahoo.com* , etc). Website addresses could be listed as IP addresses in the 'IP list' field ( illustration).