Task requests that are assigned to you appear in your Mail folder with a special task assignment icon.
Viewing your inbox in Mail view, select the task assignment request.
In the preview pane, Accept and Decline buttons will appear above the message.
Click Accept or Decline.
A dialog box will ask how you want to reply to the request.
Choose how to respond to the request:
Edit the response before sending by adding a message to the response.
Send the response now without adding a message.
Click OK.
A response message is sent to the person who assigned the task to you. Accepted tasks appear in your Tasks folder.
Once you have accepted a task, you are able to reassign it to someone else using the Assign button, or simply send someone else a copy by using the Forward button.