Select user roles via select2, select, radio, checkbox and etc input field.
Code Sample:
Via select2
array( 'id' => 'user_roles_field', 'title' => __('User roles select Field','text-domain'), 'details' => __('Description of User roles select Field','text-domain'), 'type' => 'select2', 'args' => 'WPADMINSETTINGS_USER_ROLES', ),
array( 'id' => 'user_roles_field', 'title' => __('User roles select Field','text-domain'), 'details' => __('Description of User roles select Field','text-domain'), 'type' => 'select2', 'multiple' => true, 'args' => 'WPADMINSETTINGS_USER_ROLES', ),
Via select
array( 'id' => 'user_roles_field', 'title' => __('User roles select Field','text-domain'), 'details' => __('Description of User roles select Field','text-domain'), 'type' => 'select', 'multiple' => true, 'args' => 'WPADMINSETTINGS_USER_ROLES', ),
array( 'id' => 'user_roles_field', 'title' => __('User roles select Field','text-domain'), 'details' => __('Description of User roles select Field','text-domain'), 'type' => 'select', //'multiple' => true, 'args' => 'WPADMINSETTINGS_USER_ROLES', ),
Via checkbox
array( 'id' => 'user_roles_field', 'title' => __('User roles select Field','text-domain'), 'details' => __('Description of User roles select Field','text-domain'), 'type' => 'checkbox', 'args' => 'WPADMINSETTINGS_USER_ROLES', ),
Via radio
array( 'id' => 'user_roles_field', 'title' => __('User roles select Field','text-domain'), 'details' => __('Description of User roles select Field','text-domain'), 'type' => 'radio', 'args' => 'WPADMINSETTINGS_USER_ROLES', ),