It sounds like you are trying to have multiple VPN tunnel connections to your network. You should be able to setup your VPN tunnels on different ports and apply the correct port forwarding rules (hyperlink support article https://soc.att.com/2RSe7XS) to your devices to get this done.
If you're trying to connect to VPN tunnels outside of your home network. That has to be configured by your VPN provider.
Charles, AT&T Community Specialist
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