I have not done any API connections within my current app development. Does anyone have any experience or guidance on how to proceed. I am a newbie in regards to API connections.
You can use the Qlik REST connector. I have not dealt with Paychex but successfully created connection with applications that use the OAuth 2.0 protocolfor authentication and authorization. You will first need to do a POST call with client_id and secret that Paychex will provide. This POST will result in access token that you will have to use in GET calls to obtain your data. Hope this helps and gives you the direction.