Thank you, issue resolved.I was using QB Simple Plan and Custom Fields was not available.Had to move to Essentials version to see it.

I don't see a "Customer Center"I'm using online version and all i see on the left is Customer & LeadsClicking on it shows Customers and MarketingIf i click on a...

TRIAL users able to do the same ? I'm trying out QB at the momentand I am already lost at #2 - Additional Info > Define FieldsI don't see this option