Step 1: Sign in to the Microsoft 365 portal as an administrator.
Step 2: To open the Exchange admin center, select Admin, and then select Exchange.
Step 3: In the upper-right corner, select your name, and then select Open Another user.
Step 4: Select Organize Mail, and then select Inbox Rules.
Step 5: Select New (Plus sign icon: New rule ), and then select Create a new rule for arriving messages.
Step 6: In the Name box, specify a name for the rule, and then select More options.
Step 7: Under When the Message Arrives, select Apply to all messages.
Step 8: Under Do the Following, point to Move, copy or delete, and then select Copy the Message to the Folder.
Step 9: Select the Select Folder option, and then select Inbox.
Step 10: Select Add Conditions.
Step 11: Under Forward the Messages to, select User whom you have to forward.
Step 12: Select Save