Before people on your team can sign in and use your organization's Google services, they need a user account. There are several methods to provision users to Google G Suite:
- The easiest way to add user accounts is to add them individually in the Google Admin Console. Read this Google G Suite support page for more on this.
- If you have many users, you can add their accounts all at once from a spreadsheet or CSV-file. Read this page for an overview.
- On that page you will also find a way to use LDAP synchronisation.
- If you are keen on using API's, try Google G Suite Provisioning API which you can find here.