LOL at this thread.....
Just google "paypal business debit card" and a nice page will come up telling you how to apply. There aren't any special requirements here. At most, you may need a premier account but business paypal account is not a requirement. I've had a card on my personal paypal account for many years.
Once you have the biz debit card linked to your paypal account, it will automatically use whatever is available in your paypal account balance first. Then it falls back to whatever you set up as a back up funding source. This can either be paypal credit, paypal extras mastercard or paypal smartconnect.....or a bank account of course.
The mycash reloads let you load up your paypal balance (up to $4k per calendar month, $500 daily)...you load these from the comfort of home. Then go spend down your balance with the business debit card.
If this isn't making sense there's nothing else I can really say.