It is not possible to delay the polling of the server monitoring agent. We offer more than one polling frequency and you can choose based on that. What we would suggest is to note down the time at which the agent is posting data and trigger your scheduled task a few seconds after that.
For example, if the data is posted in time intervals 10:00, 10:01, 10:02..., you can schedule your task to run at 10:00:30.
This way, the server monitoring agent data collection schedule and your scheduled tasks won't interfere.