While Calendar offers a free Basic plan and a fee-based Pro plan that both deliver a number of features, both are only made for one user and you may need something that works for your large company where all your staff could benefit from a time management tool like the Calendar app.
The Enterprise Plan offers all the features found in the Basic, Pro, and Business plans. However, more than 50 of your team members will also be able to use it. Other features exclusive to the Enterprise Plan include team analytics, CRM integration, and white label capability.
Here's how you can sign up for a Calendar Enterprise Plan.
Visit this link: https://www.calendar.com/teams/
From there, scroll down and you'll see a place to sign-up for Beta access as shown below:
You'll be able to start experiencing the Calendar Enterprise features through the Beta version.
Alternatively, you can sign up for a free Basic plan and then upgrade from there by going to your "Settings" menu in the top right-hand corner of your screen and then choosing "Billing."
From there, choose "Manage Plan." You'll then see a screen that looks like below. Choose the box that says "Contact Us" under the "Enterprise Plan" column in the subscription pricing table.
From there, you'll also submit an email address. From there, you'll be contacted by a Calendar sales rep to discuss pricing and sign-up.