The switch enables you to mark Journal Batches as a Recurring Journal Batch. This is a Journal Batch that can be posted multiple times.
It applies to Nominal Ledger, Sales, Purchase and Stock Journal Batches.
For example, you often post Nominal Ledger asset depreciation entries with much the same values every month, as a Nominal Ledger Journal Batch. By marking the batch as recurring, the batch can be edited and used each month, saving you from re-entering the information again and again.