How can I copy Calendar events onto diiferent days I want on my iPad?

I run two day courses throughout the year and want to set up my calendar for next year.

How can I simply copy and paste the event onto the days I want without having to laboriously set up each one for every weekend and some weekdays?

I can’t believe I am the first person on this particular planet to have a problem with this.

[Re-Titled By Moderator]