If you need to  specify a network drive (NAS) to be backed up, and specify the “file / folder” in the Backup Target.

Cloud Backup - Select files & folders

Select the network Folder option and on the right hand side if your NAS is detected select from the list otherwise enter the hostname or IP address of your NAS device.

Cloud Backup Add network locatio

Note: You may be requested to enter credentials to gain access to the NAS environment.