How do I Calulate Cost based on another field?

[Expression]

I want to calculate the shop fee if there is data in the labor hours, how do
I do this?

 

[John Vinson]

I want to calculate the shop fee if there is data in the labor hours, how do
I do this?

Guessing here - since I have no idea how your tables are structured or how
the shop hours can be converted to dollars - you can create a Query based on
the table. In a vacant Field cell type

ShopFee: [Labor Hours] * 12.50

if the fee is $12.50 per hour. If the fee varies depending on the type of
job you'll need a fee table, and a more complex expression.