If you click Export File without first selecting any licenses (and/or) host IDs, every license in your local license database will be included in the archive, as noted in a confirmation dialog. See below.

Or, you can select one or more entries in the left pane (host IDs or license files) to include only those selected (highlighted) licenses to be in the exported archive file.
When you click Yes (if all) or Export File for selected licenses, an Export Licenses dialog lets you navigate to the spot to save the .lar file, as shown below.

Use the dialog’s navigation controls to specify another target folder or drive, as needed. Before saving, you can also rename the license archive file, to make it more identifiable. For example, instead of: licenses.lar, you could rename it MyJACE-6s.lar.
Upon export of license(s) to a license archive file, a popup dialog appears, as shown below.
