You can set the parameters for this voucher, allowing for a lot of customization options such as intervals, the number of transactions, and minimum and maximum amounts. Once someone starts withdrawing, Lnbits takes care of those parameters. 

 Ok so at least the person withdrawing needs to be online right? 

 Yes he has to be online, but you can also receive money offline with another upcoming features "reusable invoice" but at least one person needs to be online. 

 Gotcha that makes more sense. 
Thanks 🤙