change display status of one or more of {TAIL ~ the plurality} of graphical user interface objects when a time threshold expires in {HEAD ~ relation} to the activity status associated with the graphical user interface object 
change display status of one or more of { TAIL ~ the plurality } of graphical user interface objects when a time threshold expires in { HEAD ~ relation } to the activity status associated with the graphical user interface object
OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH