Log in to your Paychex account and go into Company Settings.
Select Integrated apps
Click Create App
Enter Application Name and Description
**For Merge customers: If your customer does not have access to the Payroll toggle, please follow this guide,
Select Read & Write for both Payroll and Company & People. Accept the Legal Notice and Paychex Inc, API License Agreement, then hit Save.
You'll then see the API key and Client Secret, which you'll paste into Merge Link!
Paste your API Key and API Secret in Merge Link