How to settle cost and raise invoice (Shared equipment across projects)

Hi

I am working on Equipment and Tooling Management

I have three client business scenarios to map in SAP ETM

1) Equipment dedicated to one Project (Example Crane)

2) Equipment Dedicated to Employee, (Example Cab with driver)

3) Shared equipment across projects

Can somebody help me how I can settle the cost and raise invoice to the customer for the equipment given rental purpose time based for the above scenarios

Thanks in advance

Sr.