You'll need to specify in more detail what you are trying to do.
Importing data from what source? Into what table or tables?
An Import records operation can only import data into one table at a time and the "allow creation..." option is not an option that will have any effect on the results of an import records operation, it only allows a related record to be created when a user or a script inputs data into the related child table from the context of the parent record--most often this is manual data entry into the "add" row of a portal.
Importing data into FileMaker Pro http://www.filemaker.com/help/html/import_export.16.9.htmlImport data from excel into multiple tablesImport data from excel into multiple tables 2010
Multiple Table ImportMultiple Table Import October 27, 2012
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