In a given scenario where you can monitor multiple instances of a file with the same extension you can use the dynamic files option if you wish to display each file uniquely on each row. This can be achieved via the following means.
1. Create the FKM sampler.
2. Create sample files to monitor.
3. Observe files with *.cnf extension being picked up and defined in each row
4. If you want to add an alias you can configure this accordingly