I would like to build a table where each line is numbered - first column
would be the numbers list, which also has a column at the end where I can add
hyperlinks to the lines I want the reader to 'jump' to.

So, for example line '1' would have a hyperlink at the end that would read
'20' and when the reader clicked on the '20', they would jump to that line.

This will be a template document, so I would like the first column of
numbers to be already formatted as 'bookmarks' or 'references' or whatever
they would be, from when the document is opened, so that the person using the
doc doesn't have to format as they go.

Hope that makes sense!

Very many thanks in advance and best wishes

Tara