Setting up your own two-way programming system...
You will need a account at Motorola online. Then a signed license for the software to purchase. You will also need programming cables, battery blocks and a regulated power supply. A wattmeter and RF cables. You will have to have a way of verifying the programming.
LOTS of MONEY..........
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Sounds scary, but it needn't be.
You need the program which is licensed to you by Motorola, with updates for about three years included,
and it will cost you between $200 and $350.
You will need a programming cable, again from Motorola, which might be $50 to $150.
You will need a, hopefully, dedicated laptop computer which works with your program from Motorola. You can estimate the cost of this on your own.
You will need battery chargers, probably multi-unit ones, for charging batteries.
You need two reliable people, both of whom can run the program and set up the radios. Some programs are very simple, but much more complicated ones (often requiring formal training) are common these days.
You probably should also have a decent piece of test equipment, such as a service monitor, which will cost you upwards for $2,000 in used form and a lot more if new. These units are customarily sent back to the factory once or twice a year for testing and calibration.
I've left out anything about antennas, repeaters, mobiles, portables, etc. because they were not a part of your question, but they're still integral parts of your system.