How to use Process Windows operator?

Hi,

I have a time series with two columns: time (hours/minutes/seconds) and frequency values.

The time attribute lasts 30 minutes.

I have to do frequency calculations based on 10-minute sequences of the total time.

I know it should be used the "Process Windows" operator to create windows, but I don't understand how to set the different parameters to get three 10-minute windows.

I have already read the operator's documentation, but I still don't understand.

Can you help me please?