An interactive television program guide system based on multiple user television equipment devices in a single household is provided. The system provides a user with an opportunity to adjust program guide settings with a given one of the interactive television program guides. The system co-ordinates the operation of the interactive television program guides so that the program guide settings that were adjusted with the given interactive television program guide are used by the other interactive television program guides. Program guide settings include features related to setting program reminders, profiles, program recording features, messaging features, favorite features, parental control features, program guide set up features, (e.g. audio and video and language settings), etc. The operation of application such as web browser applications, home shopping applications, home banking applications, game applications, etc. may also be co-ordinated.