To enable log archiving, click the Archiving option and then right click to add a new custom schedule. Alternatively, click the Archiving option and then the [New] button in the toolbar.
There can be up to 100 custom archive schedules in the list. Each one is actioned sequentially. If two schedules are set for the same time, the top most schedule is actioned first and the next in the list and so on.
You can enable or disable a schedule at any time by using the check box to the left of the schedule name.
The name used for each custom schedule is up to you. They don't have to be unique, but should describe what the schedule does or when it occurs.