To see Opportunity related menus under Organization level > Admin > Categories, ensure your user role has necessary permissions.
To enable the menus:
Navigate to Organization level > Admin > Organization > Security Roles.
Select a role from the Manage Security Roles list view.
Go to the Permissions tab.
Scroll down to Opportunity Properties settings.
Select the Add or Edit checkbox.
The user with the security role you gave permissions to, will now be able to see the menus.