You can forward appointments, tasks, and notes you receive to other users. Forwarding allows you to add your own comments to the item while still letting the recipients view the original message.
Forwarding simply makes the recipient aware of the item. If you want to make the recipient responsible for the item, you should delegate the item (see Delegating Calendar Items).
In the Calendar, tap the item you want to forward.
Tap , then tap.
Add the names of the users to whom you want to forward the item.
(Optional) Type a message.