To invite new users just head over the Team page in the nav and then click Invite User in the top right corner.
From there you'll just add the email address of the person you want to invite, assign them a Role (details on Roles are below), and click Send Invite. If you are inviting more than one user we have added a handy Invite More toggle to make it easy.
You can set up Google as an SSO provider for Variance. This means in addition to signing in with Google, new users will be able to automatically sign up for your company's Variance account using their Google login.