To change custom post type taxnomy slug you should do the following find rewrite code and change it to your desired slug. To play with this code file can be found in veterinary-care theme >> lib >> admin >> custom-post-types >> vet.php
$args = array(
'post_type' => array(esc_html__('veterinary', 'veterinary-care')),
'hierarchical' => true,
'labels' => $labels,
'show_ui' => true,
'show_admin_column' => true,
'query_var' => true,
'rewrite' => array( 'slug' => esc_html__('veterinary_group', 'veterinary-care')),
);
These are arguments for custom taxnomy or post type group find rewrite, and change veterinary_group to your desired slug.
Now to change custom post type's slug from veterinary/ to our-doctors/ Find the arguments for custom post type and change rewrite rule to new slug like in below code.
$args = array(
'labels' => $labels,
'description' => esc_html__('Doctors Section', 'veterinary-care'),
'public' => true,
'publicly_queryable' => true,
'show_ui' => true,
'show_in_menu' => true,
'query_var' => true,
'rewrite' => array('slug' => esc_html__('veterinary', 'veterinary-care')),
'capability_type' => 'post',
'has_archive' => true,
'menu_icon' => 'dashicons-groups',
'menu_position' => 35,
'taxonomies' => array(esc_html__('veterinary_group', 'veterinary-care')),
'supports' => array( 'title', 'editor', 'thumbnail')
);
However i have made these changes in your installation and now its fine as per your desire. Thanks if you like our theme and support kindly leave us positive feedback it motivate us to keep theme updated and provide best support. https://themeforest.net/item/veterinary-care-doctor-clinic-pet-wordpress-theme/reviews/18713477