List pages in columns their category

Hi All

I have got about 200 pages that need to be listed by category A-Z over 3 columns on this page: https://www.emsite.co.uk/srft-kb/

I have tried 2 plugins –

1) Very Simple Knowledge Base

And this shortcode so far to get all pages to list under their assigned category

[knowledgebase-three exclude=2 orderby=title order=asc posts_per_page=50]

However, this just lists the categories and not the links to the pages which fall under the category.

2) Page-list

[pagelist child_of=”A”]

I assumed that the above would at least list page that is assigned to category A but it lists all pages.