HM CMB: Role Select

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There is a list of roles in the $wp_roles WordPress global object.

Set $wp_roles to a global at the top of your method of function:

global $wp_roles;

Use a Select Field to populate the options:

array(
    'id'       => $prefix . 'role',
    'name'     => 'Role',
    'type'     => 'select',
    'use_ajax' => false,
    'options'  => $wp_roles->get_names(),
),

Note: I didn’t install Humanmade CMB to test this code.