Example of manual addition of a taxonomy (without going through the configuration).To be placed in the functions.php file:
/**
* Manual add new Field to taxonomy or you can use plugin "taxonomy manager"
*
* BEGIN
*/
// A callback function to add a custom field to our "expertise" taxonomy
function expertise_taxonomy_custom_fields($tag) {
// Check for existing taxonomy meta for the term you're editing
$t_id = $tag->term_id; // Get the ID of the term you're editing
$term_meta = get_optio...