Provide an option to add longer reminder time in calendars - i.e., up to 2 months and custumize
Allow Outlook to customize reminders (e.g., 10 weeks, 7 weeks, two months) extend beyond 2weeks
Calendar events need a longer reminder window than 2 weeks prior.
I sometimes need longer reminders than 2 weeks, or other numbers of minutes or hours than in the menu. I just click into the frame with the current reminder and overwrite the numbers (e.g. 2 weeks, click on the 2 and overwrite it with 8 weeks). This is not exactly what you are looking for, but it may help if you don't need it on a regular basis.