Hi @ManpreetRu
There may be confusion about this event.
The custom events are typically set up and fired by your developers.
in some cases, they may onboard data from third party systems to have offline data in your report suite as well.
But since you're talking about form submits, I assume we are talking about events from your website.
i would suggest you reach out to your developers and ask them your question.
cheers
Cheers from Switzerland!