You start to take payments against your invoices, and payments to suppliers via PayPal's online payment provider. Here's what we would suggest you need to do:
1. Create a new account in your Chart of Accounts (Settings > Chart of Accounts)
2. Select 'PayPal' as the name, Asset as the Account Type, and tick the Enable Payments to/from this Account
3. Click 'Add' and you will then be able to select this account in the account drop-down of the payment section on your invoices and purchase orders. We'd suggest selecting the 'Online' type of payment.
Want to know why only certain accounts are available for selection on your Job cards, invoices, credit notes or purchases? Click here for an explanation...