Add Display Name to SP Online List and populate it with information from Azure-AD

Okay. I don't know if this is the right place to ask this question but the question is the exact same as the title. 

We have a certain list at work, where I want the name column to be automatically populated taking the display name from Azure-AD. In that way if someone is hired their name will automatically be added to the ones that already are there in that list. 

Thanks in advance.