Is there any way to set event numbers in Google calendar?

Question

Google Calendar

Is there any way to set event numbers in Google calendar?
For example, I want to enroll in a course. The course runs on Mon and Thu and consists of 16 lessons.
I'm doing a recurring event, but the title is the same.
How can I number them so I know how many are left?
And somewhere else there is a transfer of classes due to the holidays. How to move events while keeping numbering.
Or advise, please, an alternative that can do this and works on all devices?