Easy way to do this is to ask your LT who does the radio programming for your agency. Might have been a shop, might be someone at your agency, county, etc.
Then start there.
These modern radios have so many features that it is difficult for us radio guys to set up every single feature exactly right the first time. I'm not a cop, so I have to rely on what I know from my experience, talking with them, and looking at the setup of previous radios. After all that, it still comes down to me making a few assumptions about programming the features. To top it off, a number of the features are tightly intertwined, so what might seem like a simple change can often get quite complex.
Then, I have the officers start using the radios. I stand by waiting for feedback and ready to make changes. Usually takes a bit of time to shake out all the finer details.
If your LT is wanting you to take this on, it's entirely worth the agencies time/money for you to build a relationship with the radio guys. They should be happy to work with you to get the radios set up correctly. Find out who that is, buy him/her a cup of coffee and sit down with them to go through the radio programming. Ultimately it'll work out better for everyone. My #1 goal is to make sure the radios work for the officers, and I'll go out of my way to make sure that happens. I know that when I program a radio for the first time, it will not be the last time I have to touch it.