Limit number of publications displayed

Is it possible to limit the total number of publications displayed? I am displaying a list of newsletters and would like to display the most recent 6 – so when I add a new one the oldest automatically drops off the list. I don’t want the ‘next’ option displayed – I suppose the alternative would be to just use CSS to remove the ‘next’ button but I might need this for other pages.

https://www.ads-software.com/plugins/wp-publication-archive/