Illustrative embodiments provide a computer implemented method, an apparatus and a computer program product for meeting invitation processing in a calendaring system. In one embodiment, the computer implemented method comprises receiving a meeting invitation request from a user, wherein the meeting invitation includes a set of attributes and analyzing the set of attributes of the meeting invitation request. The computer implemented method further comprises selecting a process from a set of predefined processes comprising a pending meeting indicator process, a multiple meeting display process, an availability probability process, and a prioritized list process to create a selected process, and selectively modifying the selected process to create a modified process. The computer implemented method then invoking the modified process to process the meeting invitation request, and notifying the user.