Category to be displayed only once in the grid even if there are multiple posts from that category



I have created one grid on my home page using essential grid plugin. Using Wilbert skin, I am able to display Categories on the grid. However, depending on number of posts from category, it is repeating/showing those categories multiple times.

I would like to show all my categories to appear only once even though there are multiple posts associated with it.

Appreciate if anyone can help on this. by the way, I am using MagXP as my base theme for my site.