I do not want to use authorization

Using authorization is up to a point optional. It is not possible to switch authorization off but you can, as administrator, grant all users all rights by following the steps below.

1. Start a ITP/MDK Repository Client.
2. Log in as administrator.
3. Choose New Role... from the File menu, which is only available when the folder Roles is selected, or choose it from the context menu of the folder Roles.
4. Select all Actions and all Reports.
5. Give it a descriptive name like 'All Rights'.
6. Click OK.
7. Right click on a user.
8. Choose Configuration in the shortcut menu.
9. Select the authorization tab.
10. Select the newly created Role ('All Rights' in the example).
11. Click OK.
12. Repeat the steps seven to ten for all users.

This procedure will give all permissions to all users, in effect an ITP/MDK Repository without authorization.