https://forum.xda-developers.com/t/add-non-messenger-apps-to-samsung-dual-messenger.3817250/

Windows PowerShell
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PS C:\Users\julian.lemmerich\User Data\Tools\platform-tools> adb devices
adb : The term 'adb' is not recognized as the name of a cmdlet, function, script file, or operable program. Check the
spelling of the name, or if a path was included, verify that the path is correct and try again.
At line:1 char:1
+ adb devices
+ ~~~
    + CategoryInfo          : ObjectNotFound: (adb:String) [], CommandNotFoundException
    + FullyQualifiedErrorId : CommandNotFoundException
 
 
Suggestion [3,General]: The command adb was not found, but does exist in the current location. Windows PowerShell does nbout_Command_Precedence" for more details.
PS C:\Users\julian.lemmerich\User Data\Tools\platform-tools> ./adb devices
* daemon not running; starting now at tcp:5037
* daemon started successfully
List of devices attached
RF8M33N6N8X     unauthorized
 
PS C:\Users\julian.lemmerich\User Data\Tools\platform-tools> ./adb devices
List of devices attached
RF8M33N6N8X     device
 
PS C:\Users\julian.lemmerich\User Data\Tools\platform-tools> ./adb shell
beyond0:/ $ pm list users
        UserInfo{0:Julian Lemmerich:c13} running
        UserInfo{150:Secure Folder:11021030} running
beyond0:/ $ pm list users
Users:
        UserInfo{0:Julian Lemmerich:c13} running
        UserInfo{95:DUAL_APP:20001030} running
        UserInfo{150:Secure Folder:11021030} running
beyond0:/ $ pm list users
Users:
        UserInfo{0:Julian Lemmerich:c13} running
        UserInfo{95:DUAL_APP:20001030} running
        UserInfo{150:Secure Folder:11021030} running
beyond0:/ $ exit
PS C:\Users\julian.lemmerich\User Data\Tools\platform-tools> adb install --user 95 "C:\Users\julian.lemmerich\User Data\Programmverzeichnis\Android\Spritmonitor.apk"
adb : The term 'adb' is not recognized as the name of a cmdlet, function, script file, or operable program. Check the
spelling of the name, or if a path was included, verify that the path is correct and try again.
At line:1 char:1
+ adb install --user 95 "C:\Users\julian.lemmerich\User Data\Programmve ...
+ ~~~
    + CategoryInfo          : ObjectNotFound: (adb:String) [], CommandNotFoundException
    + FullyQualifiedErrorId : CommandNotFoundException
 
 
Suggestion [3,General]: The command adb was not found, but does exist in the current location. Windows PowerShell does not load commands from the current location by default. If you trust this command, instead type: ".\adb". See "get-help about_Command_Precedence" for more details.
PS C:\Users\julian.lemmerich\User Data\Tools\platform-tools> ./adb install --user 95 "C:\Users\julian.lemmerich\User Data\Programmverzeichnis\Android\Spritmonitor.apk"
Performing Streamed Install
Success
PS C:\Users\julian.lemmerich\User Data\Tools\platform-tools>