Hi Corina,
Hope you are well!
The fields you marked as 'X' seems like administrator registration fields to me. To remove these fields, please click on the drop down on top left and scroll down to 'Registration paths'. Click on the settings icon next to the path's name > Toggle "Allow registration on behalf of someone else" setting to grey > Apply > Publish.
You can also refer to the article below for your reference :
Allowing Someone Else to Register on an Invitee's Behalf == LINK : : https://support.cvent.com/s/communityarticle/Allowing-Someone-Else-to-Register-on-an-Invitee-s-Behalf
I hope this helps. Please let us know if you have any further questions.
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Raashi Semwal Khati
Senior Quality Analyst
Cvent
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