1) Please don’t forget to take a backup of the file prior to any change.
2) Install and activate child theme, otherwise you will lose the changed files when you upgrade the theme. Please have a look on this theme guide below:
https://www.showthemes.com/docs/vertoh/documentation-and-theme-guide/#3.4
3) Copy exhibitors.php from the parent theme and paste this in to the child theme.
4) Login to the admin dashboard. Navigate appearance -> Editor menu.
5) Select exhibitors.php from the right side of the page listing and search for the following line.
‘paged’ => $paged,
6) Replace the above with the following
‘nopaging’=>’true’,
7) Update the file.