Just paste the following Code in your theme’s function.php
In the following Code, I have created Instruction post type with Weeks taxonomy (category) for one of my client. He requested me to show his workout plan based on Week and Day basis. So Just change the Name of Post type and taxonomy and save it.
function instruction_post_type_register(){
register_post_type('instructions',array(
'label'=> 'Instructions',
'public' =>true
));
register_taxonomy('weeks','instructions',array(
'labels'=> array(
'name'=>'Weeks',
'add_new_item'=>'Add New Week',
'parent_item'=> 'Parent Week'
),
'hierarchical'=>true
));
}
add_action('init','instruction_post_type_register');
Feel free to do comments if you need any sort of helps.