Singular versus plural

TLDR: Use plural as a default version, even though it's possible there would be only one item.

When the number of items (such as labels, groups or profiles) isn't clear, try to reword your text and write it in a way both singular and plural can be an option.

No -s in parentheses to indicate both options: label(s), group(s), profile(s)!

If it’s crucial to say there might be more than one item, use "one or more".

If you can’t find a different way of phrasing it, use the plural. It'll catch less attention than the s in parenthesis.

DoHow will you call the label groups? You do not have permission to one or more content labels you've selected.

Don’tHow will you call your label group(s)? You can’t access the content label(s).