Portfolio showing as list rather than grid

I’m creating a Photography portfolio section on my website using the Easy Photography Portfolio Plugin. I’ve been able to create multiple portfolios no problem but the pictures are displaying individually as you scroll down rather than a grid with 3 columns. This is displayed this way when viewing the thumbnails of all the portfolios and when you open the portfolio to view the pictures. Is there a setting that I’m missing to make it display as a grid?

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