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Currently our theme/plugin doesn’t support this.
Because change from link to checkbox need to process many things in query videos to display (not only change the HTML).
We’ll notice about it and research to update it later.
Currently after quick research we found you need some steps: Step 1: Go to wp-content/plugins/haru-vidi/includes/widgets/ then open file haru-video-categories.php
on line 227 you need to change the code: wp_list_categories( $list_args );
to $args = array(
'descendants_and_self' => 0,
'selected_cats' => false,
'popular_cats' => false,
'walker' => null,
'taxonomy' => 'video_category',
'checked_ontop' => true
wp_terms_checklist( 0, $args );
to display as checkbox list but you need reference more here: