1. A display control apparatus comprising: a display control unit that performs control so that multiple display items arranged in a matrix made up of multiple columns and multiple rows are displayed in a display unit; a changing unit that changes the matrix for arranging the multiple display items displayed by the display control unit from a first matrix to a second matrix in which the number of columns, rows, or both columns and rows is different from the first matrix; and a control unit that, when a change is performed by the changing unit, decides a reference column and row in the second matrix such that a displayed position, on the display unit, of the reference column and row corresponds to a displayed position, on the display unit, of a column and row in which a focused-on display item in the first matrix is located, and controls the display control unit to arrange the multiple display items in the second matrix so that the focused-on display item is located in the reference column and row, wherein a location in which the focused-on display item is located in the second matrix under the control by the control unit differs depending on a location in which the focused-on display item is located in the first matrix.