The options available for a General journal batch should be the same as other documents but workflow user groups do not work. I have only tested the option "Only one approval required out of the group" but you receive the error "Record type Gen. Journal Batch is not supported by this workflow response".

As the XE extension requires the payment journal to be approved before you can process the payment it would be beneficial if this was amended as lots of customers require this setup for BACS and foreign payments.