Hi there,

sorry for the late reply, thanks for wiriting in.

That is not possible natively, it would require a little modification to a template file. If you want to I can guide you through though.

Hi there, sure:

1. Open partials/part-sliders.php 

2. Depending if you want to make the mod to primary slider or secondary slider, move respectively to line 29 (for primary) or 124 (for secondary). If you're using a single slider you want to edit the primary one.

3. Replace this chunk of code (which is the same for both locations):

$querydetails = "
 SELECT wposts.*
 FROM $wpdb->posts wposts, $wpdb->postmeta wpostmeta
 WHERE wposts.ID = wpostmeta.post_id
 AND wpostmeta.meta_key = 'pm_featured_post_1'
 AND wpostmeta.meta_value = '1'
 AND wposts.post_status = 'publish'
 AND wposts.post_type IN ('post', 'page')
 ORDER BY wposts.post_date DESC
 ";
 

with:

$querydetails = "
 SELECT * FROM $wpdb->posts
 LEFT JOIN $wpdb->postmeta ON($wpdb->posts.ID = $wpdb->postmeta.post_id)
 LEFT JOIN $wpdb->term_relationships ON($wpdb->posts.ID = $wpdb->term_relationships.object_id)
 LEFT JOIN $wpdb->term_taxonomy ON($wpdb->term_relationships.term_taxonomy_id = $wpdb->term_taxonomy.term_taxonomy_id)
 WHERE $wpdb->term_taxonomy.term_id IN (1, 2, 3)
 AND $wpdb->term_taxonomy.taxonomy = 'category'
 AND $wpdb->posts.post_status = 'publish'
 ORDER BY $wpdb->postmeta.meta_value DESC;"
;

4. Replace 1,2,3 in 

WHERE $wpdb->term_taxonomy.term_id IN (1, 2, 3)

with the desired category ID(s), that's it.

Hope it helps