Can't edit Apple calendar on Google calendar

I have a personal calendar with Apple and my work calendar is with Google.

I shared my online Google work calendar and I can manage/edit my work calendar from my iCal app on my iPhone and iPad, no problem.

I shared my personal Apple calendar, and I can see it on my online Google calendar. The problem is that I cannot edit my personal calendar from my online work calendar. How do I share my Apple calendar so I can edit it from my online Google work calendar?

[Re-Titled by Moderator]