How do I set the duration of a "calendar insert" in tasker Declaring the starting time to be now seems to be easy in tasker. I just put 0 into the "In / For(Minutes)" field. However how do I define the length of the calendar event?
The In / For field actually serves both purposes. You can enter two numbers, delimited by a / such that:


The first number is the number of minutes from now when the event starts, and
The second number is the duration of the event


If you wanted to insert a one hour event starting "now", you would, for example, set the value of the field to 0 / 60.

This is summarized from the "Calendar Insert" entry in Tasker's Action documentation.