Admin can easily create custom fields for customers while he is creating his account in the register form. While creating a custom field using Advance Custom Field, the admin needs to select ‘Customer Edits Allowed’ so that customer can use that custom field.
Admin needs to select User Role equals to Customer in the custom field location rules to make this setting work. After customers log in, they can update the custom fields from the edit account page.
Right now the supported field types of ACF are text, textarea, number, url, select, checkbox, radio, file, email.
The plugin will work with ACF free as well as PRO versions.
Now, the field is created for a customer. You will be worrying about how you can display its value. You can use ACF functions:
the_field(‘field_name’, ‘user_1’); // where 1 indicates user ID
echo get_field(‘field_name’, ‘user_1’);