Hotspot shared users

Hello. Have set up a hotspot with an external radius server to wifihotspot.io Want to use the function “shared users” and have set it to the value 3, but each user does not get access to log in with several devices. Can anyone point me in the right direction? I also dont get the session timeout to work.[i
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Anyone? Please

I think if you use external radius you have to handle this option from there.