In the Add Job -> Triggers tab, click on Add on the toolbar, then select one of Time Trigger -> Interval or Time Trigger -> Custom types. For for an already defined trigger, click on the Edit/Clone Job-> Triggers tab or mouse right-click in the Triggers list.
Main settings tab
In the main settings you can give your trigger a description which will distinguish several triggers from each other in a trigger list. You can also choose between the Interval time trigger and Custom time trigger type triggers. If one trigger type is selected, the other tab will be grayed out.
Interval tab
This time trigger is a simplified Custom time trigger. Also some features are added; like running something the last day of every month.
Custom tab
The Custom time trigger also allows setting of time details when a Job should be triggered.
Expiration tab
The expiration date/time for the time trigger may be set. Also the handling (inactivate/delete) of the expired trigger is selected.