Profile - Organisation Details but add employee/voluntter
For WordPress you will need to use Caldera Forms to achieve what you are looking to do. Here is a link to the documentation:

https://docs.civicrm.org/user/en/latest/website-integration/integrating-with-wordpress/#caldera-forms-civicrm

Here is a link to the Caldera Forms CiviCRM integration on Git Hub:

https://github.com/mecachisenros/caldera-forms-civicrm

Hope this helps