I've been investing in stocks for a while but never bought "O"s....

I've been investing in stocks for a while but never bought "O"s.
I read the explanation and basically understand how it works.

AEB is speculative, so I wanted to spend a small amount of money which I wouldn't mind even if I lose, but with leverage.
I understand I can trade AEBO but my original intention was to buy and hold it hoping the SP will go well above 5c by expiry. However, I couldn't find any information about exersizing it on my account. How can I exercise it?

Reading your post, I now think it doesn't matter much though, I'll be able to get almost the same gain by just selling it.

Thanks again.