Professional examination and transfer of the certificate to family member possible???

Hi guys, I want to register for the professional exam for the taxi and car rental company for the next few days. I bought the necessary booklets and there is already how it works, but how does it work in reality? So I mean now those who had the written and oral exam behind them and possibly have a hold. And my second question would be if I could have a family member registered with them or if I could leave the permit to them without having to Danac I would like to thank you in advance. Mfg