To display an image for each category, follow instructions on this page:
https://ylefebvre.ca/wppluginsdoc/index.php/Using_category_icons
To display links in a multi-column fashion, the easiest way would be to start by resetting your library configuration to a table layout using the button that says “Reset current library for table layout” when you click on Library Configuration.
Then, go to the Advanced tab of Library Configuration and move the <tr> tag from the Before Link row to the Intermittent Before Link row. Similarly, move </tr> tag from the After Link row to the Intermittent After link row.
Finally, set the Display number to a value other than 0 in the Intermittent Before Link to specify after how many links these fields should be displayed. So, if you want to see three links per row, you would set that number to 3.
If you plan to display multiple link fields of data in a cell, you should also remove some <td> and </td> tags so that you only have one before the first field that displays and after last one.
Let me know if that helps or if you need further assistance. Please consider donating to support this plugin’s development.