You need to keep in mind that "holding" the license will require 2-3,000/year to maintain association, MLS, continuing education requirements and other expenses on an annual basis.
Specifically what PM companies expect is much like any broker, it's specific to each company and their policies. There are a few brokers that do only PM, but most are like a division of a larger brokerage that performs the full spectrum of real estate brokerage services.
There's a lot of flexibility in how people practice as real estate professionals. That's what many people find appealing about it. What any given broker will expect or allow is really a question you have to pose to any one you consider working with. The answers are probably different for each one you talk to.
Don't get discouraged if you start off with a few "NO"s because you get those a lot in this business. You have to figure out who you want to work with or how you need to approach who your are dealing with to get to YES. This point applies to almost all aspects of the RE business!