The Users page allows you to add multiple users via the dialog. If you need to add significant numbers at once there are several additional options.

Via Single Sign-on

The easiest way is to enable auto-provisioning of new users on first login. This allows any user authenticated by your SAML 2.0 or OAuth 2.0 provider to create PagerDuty account. Single Sign-on can be configured by Account owners on all Standard & Enterprise accounts.

With your Customer Success Manager

If you’re looking to add 25 or more users, put them in a CSV file and contact support@pagerduty.com so they can import them for you.

From other tools - users can be imported from:
 

• Active Directory 2
• ServiceNow 1. Scroll to “Provisioning Users to PagerDuty”
• Use our API or a Script: our REST API has a /users endpoint that accepts users as JSON. To add multiple users call it in a loop. You can also use this Ruby script to import users from a CSV

More in PagerDuty’s Knowledge Base article: Import Users from a CSV.