Display comma in number field (thousand separator)

Love Zoho so far! How can I add comma as thousand separator in number field upon input by user? This is essential feature when dealing with larger numbers to make readable. Is there number formatting script for this?

For example, change 600000 to 600,000

This link appears to be related to the topic.

https://help.zoho.com/portal/en/community/topic/amount-display#2266000001410984