Currently, you can "Copy" an existing prefix config. between profiles and the copy will also be under “Any object type” if the original one was.
However, if adding a "New" prefix configuration, the “Object type” drop-down list does not contain “Any object type”.
This just seems like an accidental omission that needs to be corrected.
...so the request is that it would be useful to see “Any object type” in the “Object type” drop-down list when adding a NEW prefix configuration.
BTW, you can currently work around this by manually editing the AstorAddIn>NumberingPrefix table and setting object type to “0" for it to appear and work for “Any object type”.
...but it should really be a simple case of having the option in the dialog box!
