Data valuation before form submit (sum of 2 columns)

[Jeff_Hager]

I would consider making a custom form if you need to perform real time calculations. You still won’t have the ‘Required’ option, but you can build your own validation and prevent a row from being created if it doesn’t meet your criteria.

How do I create a custom form?

I’m just dropping this here so I have something to refer people to when they ask. This is a simple concept app (copyable), that demonstrates the following techniques: Building custom forms for adding and editing list items (as an alternative to the native forms provided by Glide) Preventing duplicate new entries using User Specific Columns and Relations Enforcing mandatory input items The use of visibility conditions and user specific booleans to control user flow There is nothing particular…