How to setup email forwarder/alias via office 365 admin

Step 1: Sign in to Office 365.
Step 2: Go to the Office 365 admin center.
Step 3: Select Users and the Active users page, choose the user who’s email you want to forward.
Step 4: Scroll down to Mail Settings and expand using the drop-down. Click or tap Edit.
Step 5:On the Email forwarding page, select Forward all email sent to this mailbox toggle, enter the forwarding address, and choose whether you want to keep a copy of forwarded emails. If you don’t see this option, make sure a license is assigned to the user account. Choose Save.