Divide list of Posts from one Category into two columns

I realise my previous topic did not make sense, I had the wrong terminology!

I have a list of tutors from a Category called My Tutors, they are listed on a long list down the page. If there are twenty tutors I want them to be divided into two columns, here is the code I used.
[catlist name="My Tutors" orderby=title order=asc numberposts=-1 thumbnail=yes thumbnail_size=64,64 title_limit=60]

To get two columns of Posts from the same Category I have tried the code below (as suggested in the FAQ ‘How to display lists in columns’) but I just get two long columns of the same Posts, the second one duplicates the first one. Is there a way of dividing the list of Posts from one Category into two equal columns?

<table>
  <tr>
    <td>
    [catlist id=3 numberposts=5 excludeposts=this]
    </td>
    <td>
    [catlist id=3 numberposts=5 excludeposts=this offset=5]
    </td>
  </tr>
</table>

https://wordpress.org/plugins/list-category-posts/