Hi Ralf,
The item that gets created in the left-side navigation pane in File Explorer (I think this is what you are referring to) is hard-coded to "HCP Anywhere" and cannot be changed.
There is one exception - Hitachi does offer a paid branding service which our customers can use to re-brand the AW server, all clients, and the User Portal. As part of this service, a re-branded desktop client would be provided with the "HCP Anywhere" shortcut renamed.