https://youtu.be/HsmhvQEhFyc
When adding a cost option using the Job Type Creator, you have the option to combine multiple job types into a single cost option.
How to Add Combined Cost Options:
Open the Job Type Creator
Select multiple Job Types.
Select the “Combine as Single Option” checkbox.
Click OK.
The different Job Types now display as a single combined Cost Option. The Costing lines associated with each Job Type will all be displayed together on a single Cost Option.