How to Accept and Forward LinkedIn Introduction Requests
If you accept the request, click the Forward button.
A new window opens where you can compose your message to the recipient. The text box in the middle contains the note from your friend to you, which you can supplement with a note to the intended recipient. Be sure to add your own comments to help connect the two people properly.
You can also delete the first person's note to you, especially if that personal note was for your eyes only, not the intended recipient. Click the Forward Message button to send the request.