How to track shop labor?

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Hello, 

I am trying to find the best way to track shop labor. Its very difficult to get a straight answer. 

Here is the scenario:

We have Sage 100 contractor

We have Sage SSO

We have an in-house shop and 2 mechanics and 100 pieces of equipment.

How can we track "shop labor" by Employee, by Equipment, by Hour. 

My 1st thought was to create a "DUMMY" job in Sage.

Dispatch the DUMMY job to the Shop employees. 

Have the Shop Employees create a Daily Field Report with Assignment Time records for all of their labor.

They would apply Cost Codes, and Equipment records. 

I could then input this into Daily Payroll. 

HOWEVER, this method, does not work -- because labor that is tied to a job automatically gets associated to "Direct Labor" expense account. 

I would like this particular job to hit the "Equipment/Shop" expense account.

I don't think it's possible to make an exception for just 1 job?

How do most people - track Shop labor by Equipment?

There has to be an easy way to do this?