Pair-A-Palooza is really just a way to get folks to pair more within a certain timeframe. the bulk of the work is making sure folks understand how to fill out the zine, and that scheduling does indeed happen, which can be implemented using whatever scheduling mechanism you have.
Events work best when they have a start and end. For my first pair-a-palooza, I chose 3 days for folks to take 1-hr time slots to pair with me. This can vary based on how many folks are pairing, and what your groups workload looks like. I'd reccomend choosing at least a few weeks ahead of you, for your first time, to prepare the zines, but once those are created, you could do pair-a-palooza anytime!
Using the PDF template, distribute a blank zine to everyone who wants to be involved and have them fill it out. (at this point, its useful to have had yours filled out already as well, so you can field questions, and share yours to review) Here's an explainer for what can go in each page, or feel free to modify the zine to take your own info!
Allow folks to take some time to fill out the zine, but give a deadline to collect them. It's great to have a place for them to live, so folks can review at their leisure without having to ask the author for it.
Before scheduling time with folks, its useful to be able to review zines, and get an understanding of what folks want to pair on, and allow for time to prepare before pairing.
You can "Schedule appointment slots" on Google Calendar, or use a site like Calendy to have at least a few slots folks can claim to pair with you.
Make it happen! Pair with folks!
After you pair with someone, there's a second, inside page, of your zine, that you can document when folks paired with you which you can use to have them write a note about pairing with you, or to reflect on your own about how it went.