The APA Conference website, and organization of the conference in general can be a bit confusing to those who have not attended. Here is a response to a recent student question outlining the difference between sessions, mobile workshops, and training sessions and how you sign up for them. Enjoy! ~ Katie
At the conference there are several kinds of activities - sessions (or could be called panels), mobile workshops, and training sessions.
The sessions are the bread & butter of the conference - they are what is included in your registration fee and there are multiple sessions going on in each time slot throughout the day at the conference. They are basically talks and presentations from practicing planners, etc, about the topic. You do not have to sign up for these sessions and can choose right before you go to them (or even go to one and leave for another one) - open door policy. You can view the session in the conference section by going to Program/ Browse and then clicking on the different tracks (They are the ones that say 0$). There is the tab to add the session to your schedule, though you don't have to. This schedule of sessions that you set up is only for your convenience and you can change it. You will receive a brochure in your registration packet when you arrive that shows all of the sessions for each day and is much clearer.
The mobile workshops and training session are extra (however much noted next to their tab). You do need to sign up (and pay for) these ahead of time. When you register you will be given the option to do this. Once you are signed up for them, you are not able to change the workshop. When you arrive at the conference, your registration packet will include a ticket for this workshop. They may have a bulletin board at the conference where people can put up tickets that they are not using, so you could try to trade out a ticket there.