Menstrual Cups! Help! How to?

Ginni
Hey Evettes!
I have wanted to try a menstrual cup for ages but I'm so confused about how to deal with it when you're in a public bathroom?
Do you wear, take it out, dump the contents and then put it back in? I'm nervous to say the least! Surely you don't rinse it?
Please help with any advice ☺️