Hi Jon,

As you noticed only the “Base” group is shown in the registration process by default and there is unfortunately no option to show other field groups at the moment. However, here is a code snippet that makes it possible to display all field groups in the registration process:

add_filter( 'bp_has_profile', 'gwangi_buddypress_registration_show_all_field_groups', 10, 3 );

function gwangi_buddypress_registration_show_all_field_groups( $has_groups, $profile_template, $args ) {
	if ( bp_is_register_page() ) {
		global $profile_template;
		$args['profile_group_id'] = false;
		$profile_template = new BP_XProfile_Data_Template( $args );
		$has_groups = $profile_template->has_groups();
	}
	return $has_groups;
}

If you don’t want to display all field groups you can also exclude some of them. For example let’s say you want to exclude the groups with an ID of 3 and 5, then you just need to add this line: $args['exclude_groups'] = '3,5'; under this one $args['profile_group_id'] = false; in the snippet above.

As for the multi-step signup, that is a more advanced topic that would require some PHP skills so all I can do is tell you that the starting point would be to make a child theme and override the template located at gwangi/buddypress/members/register.php (instead of the snippet I provided).

Please let me know if that helped you.

Best regards,