Hello,
Can you please explain bankroll for the non technical user.
I have old coins in my wallet, why i need bankroll, why it is not done automatically ?
How can I explain this to my granny who want to use BBP? she doesn't knows anything about computers, she just want to buy some BBP and leave the wallet open few times a day and receive some rewards for POG.
exec bankroll - its like getting change from a cashier, but you set your own quantity and denominations.
For example, let's say you have 500k BBP, you want to make into qty 50 x 10k BBP.
You would type:
exec bankroll 50 10000
You should have many identical outputs. 
You must specify type: IE 'exec bankroll quantity denomination'. IE exec bankroll 10 100 (creates ten 100 BBP bills). (code -1)
More details here:
https://discontinuo.us/biblepay-unofficial-wiki/proof-of-giving/how-to-setup-biblepay-proof-of-giving-pog-using-new-wallet