Frink Henryson You can change this in the tags extension.Tags > Settings > Number of Primary Tags > Min 1 Max 1 You can also change Required Number of Secondary Tags to 0 to 0, etc.
Frink Henryson You can add a primary tag by adding it as a secondary tag, then dragging it back (if you get what I mean) so it becomes a primary tag
Frink Henryson Hmmmmm. Click and drag the tag over to the left until the dotted box behind it becomes a lookalike primary tag