Hello environeerssrq,
Thanks for reaching out to us! Your site is looking great!
You can follow the instructions within our Themer’s Guide to learn how to customize the main views for your calendar. When customizing, you can use the WordPress <a href="http://codex.wordpress.org/Function_Reference/is_tax" target="_blank">is_tax()</a> conditional to check which category archive is currently being displayed and conditionally display different intro texts.
I’m sorry I wasn’t able to give you a direct response however I hope this was able to point you in the right direction.
Thanks!