If you would like conference room reservations made in Tactic to appear on Google Calendar, just follow the next couple of steps to get your account set up.
Navigate to Tactic and click on the "Get Started" button next to the Google Calendar icon in Tactic under Settings -> Apps & Integrations.
After logging into Tactic, it will direct you to the Google authentication view.
Enter your email and password, then select "Allow" so that Tactic can connect with your Google account.
Once you've done this, you will be notified that you've successfully authenticated Google with Tactic! Now that this is done, each conference room reservation you create automatically show up on your Google Calendar!