I think you just add the category:
[[Category:United Empire Loyalists]]
...and it looks like there's a sticker. Add the text below, filling out status and date appropriately. You can look at other profiles in the category to help figure it out.
{{UEL | status = Proven | date = 03 October 1833}}
Just make sure the spelling on the categories and stickers is correct. You wrote 'Loyalist' not 'Loyalists' before, so it didn't categorize correctly.