In some examples, an apparatus for scheduling service assets for an event is provided. A schedule of events and service assets is stored. Each event in the schedule of events is associated with one of the plurality of service assets. A first service asset is unable to attend an event. A substitution request from a first computing device associated with the first service asset is received. A user interface is generated for display on the first computing device. The user interface includes a plurality of selectable items corresponding to the plurality of service assets, a selectable request-substitute interface element, and a selectable event sign-in interface element. In response to receiving a selection of a send-request interface element, a substitute request notification to be displayed on a second computing device is transmitted. In some examples, the schedule of events is updated to reflect a second service asset associated with the event.