Go to the folder you downloaded your template to.

Extract the downloaded zip file.

Go into the folder you just extracted the ZIP file to.

Copy the folder.

Go to the Runthru Template folder located at Documents > Runthru > Templates

If you're upgrading an old template please rename the existing one and add "_OLD" to the end of it.

Paste the new template here in the Templates folder.

Open Runthru.

You can now go back to your downloads folder and delete both the ZIP file and the extracted folder.

Your new template will appear in the list.