In ArcGIS I've created a layer package with several shapefiles (that include symbology and labels) so I can send it to a coworker. In addition, I've added a spreadsheet document under the "Additional Files" tab (see image below) so my co-worker can cross check it with the attribute table.
My question is, how do my co-worker open or view that spreadsheet from the layer package? When I opened the layer package in ArcMap there is no mentioning of the attachment in any of the menus.
I've researched ESRI's help pages on the subject and none of them specify how to open the additional files, only how to add them.