A CPU of an MFP executes a program including: a step of receiving combination information collecting combinations of functions set by a user from a server computer and storing the information in a function combination management table; a step of reading the function combination management table, when a user logged in to a certain MFP selects a function; a step of reading not-to-be-displayed recommended function for the user from a not-to-be-displayed function management table; a step of displaying a function or functions combined with high frequency with the established function and not set to be not-to-be-displayed, as recommendations on a touch panel display; and a step of storing, when a recommended menu setting button is pressed and a function set as not-to-be-displayed function is established, storing the selected function as the not-to-be-displayed recommended function, in the not-to-be-displayed function management table.