This process can be done by the admin or by a user starting at step 4.
1- Login as admin
2- Goto "Setup" menu and click -> Manage:
3- You will see all the extensions, login as the extension you want to change clicking the icon:
4- Once you are logged as the extension you will be able to change the call rules. In the "Features" menu click-> Call Rules:
7- Click-> Back to Call Rules:
8- Edit the rule you have just created for adding the phone where you want to forward the extension, click the pencil icon:
12- Click-> back to call rules.
13- At this point we are almost done, you will see that the rule we have just created is at the bottom of the list, you have to move it to the second position. for moving a rule you have to click on green arrow and drag the rule up. Once the rule is placed in the second position we are done. This is the green arrow you have to move up:
14- And this is the picture of the rule placed in the second position:
That's all the step to forwarding the calls from an extensions. Then each user have to login to their portal and set their status to "Home Office". Setting back the status of the extension to available will disable the forwarding.