Default agenda

We have an issue about the default agenda when an user login. It should be the next meeting--it worked like that before. But now, some how the default agenda becomes an agenda in December, which cause confusion often. How to set the default agenda to the next meeting? Thanks.
BTW, our website is: tandem.toastmastersclubs.org

You can use any prior meeting agenda as the "default" template for a new meeting agenda.
Did someone use a December meeting agenda by mistake?

Thanks. I'm not talking about the template, but the agenda displayed when user login. It should be the next meeting, but somehow it always display the agenda on a particular day

I just log in to test it, it seems behave correctly now. Thank you!