Hi @Charles Binder
Thank You for posting in Q & A.
To create new User in Azure - Login to Azure portal - Goto Azure Active Directory - Add New User and assign roles.
Refer to the below screenshot and follow the website links
Add or delete users using Azure Active Directory
Assign administrator and non-administrator roles to users with Azure Active Directory
learnig Module - Create Azure users and groups in Azure Active Directory
If the Answer is helpful, please click Accept Answer
and up-vote, this can be beneficial to other community members.