Admin UI – scrollable?

This will be specific to your columns and desired widths, but below is an example which sets a minimum width for each column, then a specific width per-column.

There is a link in the comments for a YouTube search on how to use the browser Web Inspector to find additional classes for other columns. The admin_footer action is set to output this stylesheet on both post listings and user listings.

The below example is generic WordPress admin styling. It is not specific to Pods.

<?php
// This action adds things to the admin footer.
// wp_enqueue_style() is an alternative method.
add_action(
	'admin_footer',
	function() {
		if (
			'edit' !== get_current_screen()->base
			&& 'users' !== get_current_screen()->base
		) {
			// Do nothing if this is not a post listing or user listing.
			return;
		}
		// Output a stylesheet (CSS).
		// Search YouTube for "how to test css with web inspector":
		// https://www.youtube.com/results?search_query=how+to+test+css+with+web+inspector
		?>
<style>
	/* Only do this for the non-mobile view. */
@media only screen and (min-width: 700px) {
	/* Don't scroll the window horizontally */
	#wpwrap {
		overflow-x: hidden;
	}
	/* Make the outer post listing table scroll horizontally. */
	#wpwrap .wp-list-table {
		overflow-x: scroll;
		max-width: 95vw;
		display:block;
	}
	/* Treat the table header, body, and footer like a block layout instead of a table. */
	.wp-list-table thead, #the-list, .wp-list-table tfoot {
		width: auto;
	}
	/* Minimum width for each column and header. */
	#wpwrap .wp-list-table th,
	#wpwrap .wp-list-table td {
		min-width: 20vw;
	}
	/* Minimum width for a specific column and header. */
	/* "vw" is a unit meaning percentage of viewport (window) width. */
	/* See the YouTube search linked above for more information on identifying specific column classes. */
	#wpwrap .wp-list-table .column-title {
		min-width: 40vw;
	}
}
</style>
		<?php
	},
	100
);