Begin by creating a Field Group. A Field Group is a bundle of one or more custom fields. We can manage the fields within each Field Group. Each Field Group also has a Placement Rules box, where you specify edit screens the Field Group should appear on.
The Field Group will appear on edit screens as determined by Placement Rules. For example, if you choose “post_type = event” within Placement Rules, then the field group will appear on all event edit screens. Simply fill out the fields.
In order to display custom field values, you’ll need to add code to your template file. CFS comes with a lightweight API for pulling values into your template. See the get() method for more information. To output the “first_name” value, add the following code to your template:
<?php echo $cfs->get('first_name'); ?>