Didnt understand how to create organization

[Rohit Shukla]

Create an organization

You must be a site admin to create an organization. Your organization name does not have to be unique and you can rename it at any time.

To create an organization:

1. From your Site administration, click Security under Organizations & Security.
2. Click Try Atlassian Access. This link takes you to admin.atlassian.com.

3. Choose Create organization, and then enter a name for your new organization.

As the creator of an organization, you’re the first organization admin, and you can add others as organization admins. See Give users admin permissions for more details about what organization admins can do and how to add them.

I am not getting, what does it means? You must be a site admin to create an organization.

I want to get atlassian access.