Please Only Pick ONE Session Per Time Period

In a conference with parallel presentations you can only be at one at a time. You'll likely feel conflicted. The most I recall was years ago at AAAS (American Association for the Advancement of Science) conferences.
Looking through the program for the next OGS conference perhaps you'll face the same challenge. It's one organizers like to present you with -- something for everyone in each session.
This year OGS is offering, in addition to pre-conference workshops, plenaries and pop-up presentations, three sessions on Saturday and four on Sunday, each with five choices. That's 78,125 possible combinations. Unless you're joined at the hip nobody should have quite the same conference experience.
Check out the program for OGS Conference 2018 here to see what's on offer in each session.