One way you can do that is to first reserve unique IP numbers on your router for each of them. For convenience, I reserve the .100,.101,.102,.. series for my ASIAIRs, INDIGO Sky, All Sky camera, StellarMate, and N.I.N.A. PCs, but they can be any unassigned number. Open your router's settings to do that.
The disk volume on your ASIAIR can then be accessed uniquely using the Samba URL of "smb://192.168.1.101", for example.
On macos (since it is Unix), you can additionally edit the /etc/hosts file to assign a unique name, for example
192.168.1.101 asiair1
192.168.1.102 asiair2
192.168.1.103 allsky
192.168.1.104 indigoSky
...
After doing that, from the macos "Connect To Server" interface, you can then refer to each ASIAIR Samba server for example as "smb://asiair1" instead of "smb://192.168.1.101".
Chen