Help with cabinets

So I'm new to the axefx3 and I'm trying to change the cabinet at the end of my signal chain to emulate my actual 4x12 Marshall 1960B cab with G12T-75s. I see there is one available:

'039 — 4x12 1960B T75 (RW) — "Straight Marshall 1960 loaded with four Celestion G12T-75s"'

So my question is how do I import or load this cabinet so I can add it to the end of my signal chain. I only see about 30 cabs to choose from and none are the desired cab. Please excuse my ignorance. Thanks!
 
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