Expense Tracking in Epicor

What is the easiest way to track expenses related to a specific project? For instance, if you were going to be doing some maintenance work on a piece of equipment and you wanted to track all of the expenses related to that maintenance project is there an easy way to flag all of the related expenses (PO's and Directly entered invoices) so that you can report on it?

Seems like you could use the Project function in Epicor but seems like there should be an easier way. the Project function can be set up to be a pretty powerful tool and all I want is the ability to track certain expenses.

Thanks in advance for the help. I am new to Epicor. I was a key user in a SAP shop the past 5 years and just started working at a Company that uses Epicor.