Tailscale added Fast User Switching in version 1.34 and you can now use the new login command to connect to one or more headscale (and Tailscale) servers. The previously used profiles does not have an effect anymore.
Use Tailscale's login command to add your profile:
tailscale login --login-server {{.URL}}
This page provides configuration profiles for the official Tailscale clients for
The profiles will configure Tailscale.app to use {{.URL}}
as
its control server.
You should always download and inspect the profile before installing it:
curl {{.URL}}/apple/macos
Headscale can be set to the default server by installing a Headscale configuration profile:
macOS AppStore profile macOS Standalone profile
Or
Use your terminal to configure the default setting for Tailscale by issuing:
defaults write io.tailscale.ipn.macos ControlURL {{.URL}}
defaults write io.tailscale.ipn.macsys ControlURL {{.URL}}
Restart Tailscale.app and log in.