Two Presentation Rule
The PAA Board of Directors has instituted a two-presentations rule, i.e., each person is limited to a maximum of two presentations (summed across regular oral sessions, flash sessions and poster sessions).
A further rule is a limit of four appearances in total, encompassing the roles of presenter, chair, and discussant. But there is no limit on how many times a person can appear on the program as a co-author. Single-authored papers must be presented by the author. For multiple-authored papers, at the time of submission a presenter must be designated; once all sessions are finalized (that is, all papers and posters have been accepted or rejected), there will be a short time interval when presenter status can be revised.
Note that for the purpose of the two-presentations rule, the roles of chair and discussant do not count; instead, there is a limit of four presentations in the roles of presenter, chair, and discussant inclusive.