Event detection using cross correlation

Hello,

I want to detect a transient event during measurement. I have a reference sample of time signal for such event.

I can create FFT pattern as reference for comparison.

Can I use the correlation math tool to identify new occurences of the event?

I can select the reference channel 1 for cross correnation but how can I select my reference signal as second channel?

Is there a better way to do it?

Thank you in adavnce