To batch process payments, you can use PayPal Payouts. Follow the steps to understand how this works
Open the Payouts Tab > Pending Payments page in the App.
Click on Download button > Choose PayPal Payouts
You can open the downloaded CSV file in a spreadsheet program.
Log in to your PayPal account at https://www.paypal.com.
Click Money at the top of the Summary page and then Send Money on the left.
Click Make a Mass Payment.
From the Choose Payouts Recipients page, click Browse, select your payment file, and then click Open.
(Optional) Enter text in the Email subject and Custom message for recipient.
Click Send Payout to process your payments file.
Open Payouts > Pending Payments tab
Scroll down to select "bulk process payments"
On the next page, Select and Click on Mark Paid Button