Add the Possibility to "Extend" a Repeating Calendar Entry

Add the possibility to "extend" a repeating calendar entry.

Currently, after a user creates a repeating calendar entry consisting of, for example, 5 repeats, and the same user wants to "extend" the calendar entry, retrospectively, by adding additional repeats of the original meeting, the user must create a completely new calendar entry.

From a usability standpoint this is not a good practice, and the calendar should be extended by a feature that makes it possible to add additional repeats of a calendar entry, retrospectively, without the need to recreate the same calendar entry with additional repeats.