The present invention provides methods and systems for specializing calendar items. More specifically, a user or number of users may receive a calendar item having certain original parameters. The receiving user may wish to adjust those parameters for a subset of users that may or may not include the calendar item originator. The receiving user can then specialize certain parameters of the calendar item and transmit them to the determined subset of users without sending the same specialized calendar item to users outside of the subset that received the original calendar item.