A button set to this function allows the user to seize a line if that line is idle. This allows the user to access line for which they do not have a line appearance button on their extension.

If an extension already has a button set to this function, creating another button with this function automatically clears the setting from the existing button.

To access this function without a programmable button, press a call appearance button and then dial 8 followed by the two digit line number.