how to filter http traffic

Dear

I only want to monitor and capture http traffic, how to configure?

In addition, I found that when reading official manual picture below:

It will figure event where the configuration script engine

Hi,

If you only want to monitor port 80, e.g., you can set a custom capture
filter. See, e.g.,
https://www.bro.org/documentation/faq.html#how-can-i-set-a-custom-capture-filter

Johanna