Eu pego do texto de ajuda que isso é impossível usando o netsh. O texto completo é reproduzido abaixo:
C:\WINDOWS\system32>netsh wlan set hostednetwork ?
Usage: set hostednetwork [mode=]allow|disallow [ssid=]<ssid>
[key=]<passphrase> [keyUsage=]persistent|temporary
Parameters:
Tag Value
mode Specifies whether to allow or disallow the hosted network.
ssid SSID of the hosted network.
key The user security key used by the hosted network.
keyUsage Specifies whether the user security key is persistent or
temporary.
Remarks:
This command changes the properties of hosted network, including: SSID
of the hosted network, allow or disallow the hosted network in the system,
and a user security key that is used by the hosted network.
The user security key should be a string with 8 to 63 ASCII characters,
eg. a passphrase, or 64 hexadecimal digits which represent 32 binary
bytes.
If keyUsage is specified as persistent, the security key will be saved
and used when the hosted network is started again in future. Otherwise
it will be used only when the current or next time the hosted network
is started. Once the hosted network is stopped, the temporary security
key will be deleted from the system. If keyUsage is not specified, it
is persistent by default.
This command requires administrator privileges to allow or disallow the
hosted network.
Examples:
set hostednetwork mode=allow
set hostednetwork ssid=ssid1
set hostednetwork key=passphrase keyUsage=persistent