Slack
Block uses Slack for instant messaging across teams and business units.
Sign into Slack
Open Slack in Chrome
Go to square.enterprise.slack.com in your Chrome browser.
Sign in with Block SSO
Click Sign in with Block SSO. You'll be redirected to Okta — sign in with your Block username and password.
Select the Block workspace
You'll see a list of available workspaces. Select Block — Slack now merges all workspaces into a single interface, so you don't need to add any others.
Enable notifications
If prompted to enable desktop notifications, click Allow so you don't miss incoming messages.

Pin the Slack tab
Right-click the tab and select Pin. Pinned tabs are smaller and only show the site's icon.
You're on Slack!
If it's your first day, consider messaging your lead to let them know you're online.
Need help?
Contact mission-control@squareup.com