Layout Make readonly/Review Request

Hi Andrew,

 Usually in layout teams there will many users and most of the cases layout cells will be locked by many users. One user need to ask another user "to make read only" by orally, email or chat.

Say, user U2 locked a layout cell. Now user U1 want to edit the same. Now U1 will try to make it edit, and let him send  message to user U2's ICFB.

 Now the question is how to run command in someone's icfb?

I am aware of the fact that, the user U2 is not running icfb then this method fails.

Regards,

JackPro