Al, this place (GeoNet Resource Hub) is really focused on GeoNet, not ArcGIS software. You will get better visibility, and likely better responses, if you explore https://community.esri.com/docs/DOC-1544 and post to a more suitable space/place. I will share with Managing Data for you.
You mention "CVS" files multiple times, do you mean "CSV"? Although there is a CVS file format, it is quite niche and not used by any geospatial software packages as far as I know.
You mention the files are "on a shared drive (off line for security reasons)." Shared drives are commonly network drives, which means online rather than offline. Is the shared drive a mapped network drive?
Although CSV files can contain spatial data, e.g., coordinates or addresses, they are not inherently/natively spatial. How are you getting the information in the CSV file to link to your map? Did you join or relate the table to a spatial layer?