1. A function execution apparatus comprising: a display unit; a user interface; a function execution unit including at least one of a scanner unit and a printer unit; a processor; and memory storing computer readable instructions that, when executed by the processor, causing the apparatus to perform: screen information acquisition processing of acquiring a plurality of pieces of screen information from the screen information server when the user interface is operated by a user to issue a first predetermined instruction, each of the plurality of pieces of screen information representing a selection screen for enabling the user to select setting information corresponding to a setting item relating to a specific service that is provided by a service providing server; display control processing of sequentially displaying each of the plurality of selection screens represented by the plurality of pieces of screen information on the display unit; setting information supply processing of supplying L pieces of setting information, wherein L is an integer of 2 or larger, the setting information being selected as the user interface is operated by the user on the plurality of selection screens, to the screen information server; first information group acquisition processing of acquiring a first information group including position information and M pieces of relation information, where M is an integer of 1 or larger and smaller than L, relating to M pieces of setting information of among the L pieces of setting information, from the screen information server as the L pieces of setting information is supplied to the screen information server, the position information being information for reading out N pieces of specific information, where N is an integer of 1 or larger and smaller than L, registered in the screen information server, and the N pieces of specific information including N pieces of setting information, which is different from the M pieces of setting information, among the L pieces of setting information; storing control processing of storing the first information group in the memory; first information group supply processing of supplying the first information group in the memory to the screen information server when the user operates the user interface to issue a first selection instruction for selecting the first information group in a state where the first information group is stored in the memory; execution instruction information acquisition processing of acquiring execution instruction information from the screen information server as the first information group is supplied to the screen information server, the execution instruction information including at least one piece of setting information among the L pieces of setting information, which includes the N pieces of setting information included in the N pieces of specific information read out by the screen information server in accordance with the position information in the first information group and the M pieces of setting information relating to the M pieces of relation information in the first information group; function execution processing of causing the function execution unit to execute a specific function relating to the specific service by utilizing at least one piece of the setting information included in the execution instruction information when the execution instruction information is acquired from the screen information server; and first communication processing of receiving the specific service from a first service providing server when the execution instruction information is acquired from the screen information server.