How to setup my Paypal account to automatically withdraw money from my bank account?

So a few of my friends have been ordering stuff from eBay via Paypal through their bank account and I want to order off of eBay also but as the same way as they do.

Now, my friends and I live in the Netherlands, we all have a debit card, so to order stuff from eBay we need a Paypal account.

I wanted to know how can I connect my bank account to my Paypal account so that when I order things on eBay it just automatically removes the money without having me to transfer the money to my Paypal account first and having to wait a few days then I can order stuff.

Several of my friends have this method, but they can’t seem to remember how they did it or just won’t tell me.

I always need to transfer money to my Paypal account first, wait a few days so that it is transferred and then I can order things. I don’t want that, I want that I can just order stuff on eBay and it automatically removes the money right away.

Anybody know how to set my Paypal account like that?
Cause I know(my friends have it setup this way) that you can do that with out all the transfer and waiting hassle.