Hey Linda,
Thanks for reaching out to us!
Are the breadcrumbs on your site created by your theme or by a plugin? For this, you’ll need to find where/how the breadcrumbs are created and may have to add some custom code (or filter the existing output) to include a new argument for the calendar.
I’m not sure exactly what the setup looks like here for your site, but the conditional to check for an event page would be “tribe_is_event_query”. You could then create a section within your breadcrumbs that looks something like:
if( tribe_is_event_query() && !is_singular( 'tribe_events' ) {
echo 'Events';
}
Let me know if this helps.
Thanks!