Excel algorithm for equalizing item usage like cars & printers

I am not aware of any pre-programmed files for something like this. I know there are several "resource allocation" examples out there, most of them seem to use the built in Solver as the main engine. A few resources for research:
looks like a decent introduction to Solver, including a resource allocation example: http://faculty.insead.edu/delquie/ms...g%20Solver.pdf
A list of examples, including resource allocation examples, by Solver's programmers: http://www.solver.com/examples-optimization-problems
Another tutorial/example of a resource allocation problem: https://www.exceldemy.com/allocating...-using-solver/

There are probably others. From what I can see, the overview of the problem involves:
1) Measure "equality of use" in some way. (I saw some references to a "skewness algorithm" almost always referring to computing resources in cloud computing, but the basic idea seems the same).
2) Use Solver or similar tool to optimize "equality of use".

I would suggest that you look through some of these resources so you understand what you are up against. I suspect that the most difficult part of this is figuring out how to measure/calculate "equality of use".