Setting randomized data

I've recently taken over responsibility for putting together the Qualtrics side of a survey which had been outsourced for the experiment's first iteration. I'm currently scrambling to learn the platform so this is all new to me. A big part of the experiment involves selecting a pair of randomized names. The survey flow of the first iteration includes a randomizer that selects one pair of names out of 540 options and sets it as embedded data. We want to test new names. I'm assuming there must be a way to import a list of names and generate new embedded data fields given how long this would otherwise take. Can anyone point me in the right direction? I haven't been able to get in touch with the guy who put the first iteration together to see how he did it and haven't had any luck finding an answer in the Qualtrics documentation yet. Thanks in advance!