iCal: How can I shift a bunch of events forward a few months?

[coldjeanzzz]

I downloaded a pre designed schedule that I need to follow, but the problem is it starts on May. I need it to start today but I don't know how to edit it to do that.

I tried using some app called Calibrate but every time I try to add the calendar I want to shift it just freezes up the app.

 

[coldjeanzzz]

Nevermind, got that app to finally work.