Hi Damien. We’re limited in helping with customizations, per our Scope of Support / Terms. If you need some coding help, you may want to ask your developer or reference our documentation and list of known customizers.
I believe you’re requesting something similar as one of our existing feature requests: On the My Account page, have a My Events section (that one sounds like it is for upcoming events, but you could add your vote and a comment you’d also like to see the ones they’ve attended in the past).
Please do add your vote there (or create your own separate request).
This allows us to gauge interest in this particular feature request, which helps us prioritize our development efforts.
Thank you.