Add a profile that is buried in that cemetery first. Then add the cemetery category on that profile. It will be highlighted in red since the category does not exist. Click on the red category and then add the info required. I find it easier to find another cemetery in the same county and use the format they have edited for the new cemetery added. When you add the cemetery to that profile, you would do it like this if it was the MacGregor Cemetery. [[Category: MacGregor Cemetery, MacGregor, Manitoba]]
I will admit that I am not totally familiar with the Canadian set up. It looks like MacGregor, Manitoba is geographically close to McDonald, Manitoba. I am guessing that it belongs here but someone may need to set up MacGregor, Manitoba Cemeteries if that is wrong.