Financial Reporting Studio Batch Burst in PDF

Hi there,

I have created a batch and enabled burst to produce multiple identical reports for different entities at once. When executing the batch, I selected the "Export as PDF" and export to an external directory option. There isn't any list of folders for the external directory. Do you know where I can access to the files once batch is successfully run? I'm under the impression that to "export to an external directory", we can export to a desiginated location (say my desktop), but there wasn't any from the drop down list. Any way to add a loacation in?

Many thanks!