A method for the production and mounting of a multifunction wall which can be mounted on a wall, in particular a room divider, comprising at least two flat elements, such as panels or the like, which each comprise a wall-facing surface associated with the wall and a roomfacing surface associated with the room, and at least two mounting rails which are arranged on opposite edges of the flat elements, preferably on the upper and lower edge of the flat elements, and which are fixed to the wall and hold the flat elements with each mounting rail having at least one groove that is oriented essentially parallel to the wall, and preferably displaying two groove flanks oriented essentially in parallel, for retaining the whole respective edge of the flat element that is to be fixed, characterised in that, firstly, a first mounting rail is positioned horizontally on the wall or on a spacer element fixed to the wall and is fixed in particular to the wall or to the spacer element, and that then the mounting position of the second mounting rail located below or above it is determined such that the distance between the two mounting rails is greater by an oversize which allows a subsequent horizontal displacement of the flat elements and which can be preferably 0.5 to 3 mm, than the length of the vertical edges of the flat elements to be mounted between these two mounting rails, and - either that at least one distance element having the thickness of the intended oversize is inserted into the upward facing groove of the first mounting rail, that at least one flat element that is to be subsequently fitted is placed onto the distance element(s), and that the mounting rail that is to be fitted on top of it is positioned with its downward facing groove on the horizontal edge of each flat element - or that at least one flat element that is to be subsequently fitted is introduced by its short edge into the upward facing groove of the first mounting rail, that a distance element having the thickness of the intended oversize is positioned on the top edge of each introduced flat element and that the mounting rail which is to be positioned on top of it with its downward facing groove is then placed onto each distance element and the upper region of the flat elements beneath it and that each distance element is then removed after the mounting position has been determined and, as the case may be, after the adjacent mounting rails have been fixed. - either that at least one distance element having the thickness of the intended oversize is inserted into the upward facing groove of the first mounting rail, that at least one flat element that is to be subsequently fitted is placed onto the distance element(s), and that the mounting rail that is to be fitted on top of it is positioned with its downward facing groove on the horizontal edge of each flat element - or that at least one flat element that is to be subsequently fitted is introduced by its short edge into the upward facing groove of the first mounting rail, that a distance element having the thickness of the intended oversize is positioned on the top edge of each introduced flat element and that the mounting rail which is to be positioned on top of it with its downward facing groove is then placed onto each distance element and the upper region of the flat elements beneath it