The feature you're looking for is natively supported in Pulseway. For Windows, you'll find the solution described here:
For Linux tho, there's no GUI available; therefore, you'll need to look into the config file, which is also natively supporting this function. The agent configuration is at /etc/pulseway/config.xml , the relevant part is shown on the screenshot attached.
I also noticed you've posted in the scripting forums, are you looking to check ping response times through a sc