PO 7.4 - Testing payload from "Configuration and Monitoring Home"

Hello,

I am working on PO 7.4. I want to test a payload from "Configuration and Monitoring Home". However, in the "Testing" tab, the option to test the payload is not available. Is this option not available in PO 7.4? Only cache connectivity test exists. I have attached a screenshot for reference. Image may be NSFW.
Clik here to view.

Regards,

Mateen