How do you list multiple modifiers to a compound adjective?

That's not "weird". That's right.

Form a list where the final item contains the final modifier, a hyphen, and the adjective, preceded by modifiers plus a hyphen, using commas and conjunctions as necessary, as for any other list.

The third- and fourth-grade teachers
Full- and part-time employees
Three-, four- and five-year-old children
This paper-, time- and resource-saving option

NOTE: In the above examples, I have made the last two lists use the "Cambridge comma", that is no comma before the co-ordinating conjunction ("and"). This is the style more commonly used in British English, my native variety. In US English, a majority of style guides mandate the use of the "serial", "Oxford" or "Harvard" comma as here:

One-, two-, three-, and four-ton loads.

As for Google, a judicious query involving words like compound, hyphen, comma, etc should find you something including this

http://en.wikipedia.org/wiki/English_compound

That was actually what I thought would be the right way but then I second-guessed myself. Thanks so much, it really does make sense. My coworkers will probably challenge it and tell me that it looks "weird" or "wrong" like they often do but now I have backup

I always seem to be bad at finding things on Google, haha. I tried so many different things. I even tried searching "-," as a last-ditch attempt to find something that used it. Ah, should have just searched "compound"! I kept including "compound adjective" or "hyphenated adjective" in my searches and the articles never got to talking about using them in lists.

http://www.google.com/search?q=compound+hyphen+modifier