Users can be setup to log in and log out at different phones, this is called 'hot desking'. All the users settings, including their extension number, are transferred to the phone at which the user is logged in. This includes their key and lamp settings and appearance buttons.

This type of activity has the following effect on appearance buttons:

If logged out, or logged in at a phone that doesn't support appearance button functions:

• Bridged appearances set to the user will be inactive.

• Call coverage set to the user will still operate.

If logged in at a phone with fewer buttons than programmed for the user:

• Those buttons which are inaccessible on the logged in phone will be inactive.

• Any bridged appearances to those button from other users will be inactive.