Hi Megan,
Thanks so much for reaching out!
Just to let you know, we are limited by our Support Policy in how much we can help with customizations, but I will try to point you in the right direction.
If this has to be a widget then you’ll probably want to register a new sidebar (or reuse an existing one) and position it above the events calendar.
You would do this by editing your templates – which one exactly depends on your Events > Settings > Template > Events Template setting – but a custom ecp-page-template.php might be a good choice here if you’re setup to use the Default Events Template.
Some required reading (unless you’ve looked at this stuff before of course):
Let me know if you have any other questions on this topic!
Thanks,
Jaime