Hi Priza,

To create a new user here are the steps

1. Login to fusion (with a user that has the role "IT Security Manager" assigned)
2. From navigator (upper left, 3 horizontal lines) go to Tools > Security Console
3. In the left pane, select "Users" and click "Add User Account" button on the top right
4. Enter the details as per your choice, set a password and add necessary roles and click "Save and Close"

Video link to see all these steps (everything mentioned above is covered in this video)

https://portal.oracleerpguide.com/courses/oracle-fusion-cloud-basics/lessons/users-roles-and-data-access/

Additionally, to create a user, assign roles in bulk and assign data access in bulk, a 3-step comprehensive guide us available here (In the blue accordion):

https://portal.oracleerpguide.com/oracle-fusion-cloud-instance-access/