A system and method for confirming attendance for in-person meetings or events is provided. The method includes the steps of transmitting, to a plurality of user terminals, data configured to display at least one graphical user interface configured to facilitate users to organize and join a plurality of meeting groups associated with a plurality of in-person meetings or events; receiving, from at least one user terminal of the plurality of user terminals, a conditional confirmation of attendance for at least one in-person meeting or event, the conditional confirmation based on an indicated condition; monitoring the indicated condition for the at least one in-person meeting or event; and when the condition is met, modifying the conditional confirmation of attendance to a non-conditional confirmation of attendance.