Carson has called to ask why, in QuickBooks Online Advanced, he can't add costs to an estimate.

What are $2$ possible reasons?

The custom form style has not been modified to add a cost column

He is creating an estimate from the Projects center

He is creating the estimate from $+$ New

The Estimates vs$.$ Actuals setting is not turned on

The setting to add the customer column to purchase forms is not turned on

He is creating an estimate for a sub$-$customer