That would appear to be a Saber 2 II 48ch SECUREnet, UHF 440-470Mhz. That puts it in the right frequency range to accept FRS/GMRS frequencies.
I assume it has 4 banks of 12 channels each, more than enough room for the 22 FRS/GMRS frequencies plus additional frequencies that could be used in your area...there are a couple of frequencies at the upper end of the FRS/GMRS allocation that aren't actually being used (between GMRS 22 at 462.7250 and 467.5625), and they make for acceptable "private channels".
As I said earlier, I'm not in a position to have this programmed for you right now, but you'll need the above information to have them programmed. You can also use the following frequency allocation table to assist with programming of FRS/GMRS frequencies:
1 GMRS/FRS 462.5625
2 GMRS/FRS 462.5875
3 GMRS/FRS 462.6125
4 GMRS/FRS 462.6375
5 GMRS/FRS 462.6625
6 GMRS/FRS 462.6875
7 GMRS/FRS 462.7125
8 FRS 467.5625
9 FRS 467.5875
10 FRS 467.6125
11 FRS 467.6375
12 FRS 467.6625
13 FRS 467.6875
14 FRS 467.7125
15 GMRS 462.5500
16 A GMRS 462.5750
17 GMRS 462.6000
18 B GMRS 462.6250
19 GMRS 462.6500
20 C GMRS 462.6750
21 GMRS 462.7000
22 GMRS 462.7250
Note that although the model number lists the unit as Securenet capable, it likely has the encryption module either removed or disabled. If the module is present, you'll need a key injection module and if the unit loses power for more than a minute, you'll need to re-inject the keys.
More information here