Hi,

Login to your odoo instance with user odoo user

Go to settings > Users > Users & Companies > Create a new user

Give the permissions and access on all modules that you needed

Hope it helps

I didn't realy get your question correctly but hope this will work for you

To create a new user in Odoo 15 with the same permissions as the default "userodoo" user, you can follow these steps:

1. Log in to your Odoo instance as the "userodoo" user.
2. Go to the "Settings" menu and click on the "Users" submenu.
3. Click on the "Create" button to create a new user.
4. Enter the details for the new user, including the login email and password.
5. Under the "Access Rights" tab, select the groups that you want the new user to belong to. To give the new user the same permissions as the "userodoo" user, you can select the same groups that the "userodoo" user belongs to.
6. Click on the "Save" button to save the new user.

Once the new user is created and added to the same groups as the "userodoo" user, they should have the same permissions as the "userodoo" user to allow Odoo to run properly. You can log out of the "userodoo" user and log in as the new user to verify that they have the same permissions.