in recurring subscription, an option like," add amount to" should be available. So that we can add that amount to all customers or select customers by ticking against their names.While posting, that should add that particular amount to all /selected customers at the same time.

This will ease our work. As of now we add the amount to individual bills seperately everytime.

If recurring billing is not at regular interval but repeated bills with uniform amount, then this option will be very useful.