I don't think you can get more batch. My understanding is that all the machine's power is available for batch, and interactive just subtracts from that. If your machine has 5000 CPW, of which 1000 is interactive, that's still 5000 total, not 6000. If you're using interactive heavily during the day, there'd be about 4000 CPW available for batch, rising to 5000 when everyone's signed off. Depending on what kind of batch jobs you have (RPG vs. SQL, for example), giving more memory to the batch subsystems might help.