Navigate to https://tailscale.com/download and click on the "Download Tailscale for macOS".

Look in your downloads folder for an icon that looks like a box being opened, with a name starting with "Tailscale". Double click the icon and you will be prompted to install the VPN. You will need an administrator's password to install the VPN.

Click the menu bar icon, which looks like a grid of dots and click the Settings option.

1. Click the Account pane
2. Next to the "Add Account" button, click the dropdown arrow
3. Enter the following address into the text field: https://psvpn.gsded.com
4. Click the "Add Account..." button.

A browser tab/window will open and machine registration information. Copy/paste the key provided and send it to kyle@gsded.com. Once the back-end registration has been completed, the VPN will automatically activate and you can access the server.

Once the setup process has been completed, you can enable/disable your VPN connection by clicking the menu bar icon and clicking the slider control.

Warning: If you go into the Account settings and click the Logout button, it will remove your VPN configuration and you will have to re-register your device.