Hey there fcvolunteer,
Hope you’re well today!
This should be possible by making modifications to appointments.php which is located in /wp-content/plugins/appointments/. Backup the file just in case something goes wrong then open it with text editor of your choice and go to line 2142, it looks like this:
$ret .= '</div>';
Replace that line with this one:
$ret .= '<div class="customtext">Insert your text</div></div>';
Replace the dummy text with the one of your choice. I’ve added a class to it so you can apply CSS to it if you want. I’m not sure this is the best solution for this since the changes will be lost once you update the plugin. I’ll contact plugin developer on this one and if there is a better solution I’ll post it here.
Hope this helps ??
Best regards,
Bojan