Subsequent invoice processing tab in customer master sales area billing tab

Hi Experts,

I looked for the need of subsequent invoice processing tab in customer master: sales area: Billing tab. I searched for the previous answers regarding this and still in a confusing state.

I just want to know the exact use of the field, whether it is used to check only for printing out of manually posted invoice processing or to block the invoice to automatically release into accounting. And also is there any relation between this tab and the posting block tab in billing document configuration (VOFA)..?