"fizzbuzz" is coding exercise, used by companies looking to screen out applicants who claim to be able to code, but in fact cannot. The applicant is asked to write a short program that prints the numbers 1-100 (or whatever). When the number is divisible by 3, instead of printing it, print the word "fizz". When divisibly by 5, print "buzz". When divisible by both, print "fizzbuzz."
To anyone who actually can code, it seems ridiculous that people are applying to coding positions who can't come up with a solution to this, but anecdotally many hiring managers routinely encounter such applicants. I suspect the parent here is using the term "set up a fizzbuzz" as shorthand for "set up some time to see if you can actually cross the bare minimum coding hurdle."
Not sure if you're serious, but in case you are, it's a simple programming exercise to make sure that you can program your way out of a paper cup in your proclaimed language of choice. Details on wikipedia: https://en.wikipedia.org/wiki/Fizz_buzz