Edit Group Calendar Template

I am trying to figure out what template file(s) the group calendar plugin uses for content output. It doesn't seem to be using the groups/single/home.php template file from my active theme OR its parent theme. I have made some changes to the theme file that are necessary for it to be styled correctly.

You can see what it is supposed to look like. Here is what the calendar page actually looks like. It looks like it is using the unchanged default home.php template file, but even when I made changes to the default template file, it STILL didn't change.

Where do I need to make these changes for them to show on calendar pages?