Also, if anyone aware of a way to block users from modifying "Amount" on a sales order form, but allowing them to modify rate still. Tried to unclick show from the sublist view on the custom form, but it's locked as on and greyed out.

You need a script to disable the field

There actually is a non-scripting workaround to hide the field. You can clear out the label and then NetSuite won't show the field.

Just tried it, that worked! @michoel you're the best!

that's an old NetSuite PS trick from way back in 2012

Haha I'm learning as I go. We implemented last year and it was basically a self-implementation. Our integrator was trash. I basically learned it as I went. Thanks for the tips!

Welcome to the club...most of us learned this way too