This remote rack uses a MCB (miniature circuit breaker) rail ( IEC/EN 60715 ) (also known as DIN) to attach to the wall and therefore it only requires two screw holes to hold a varying number of remotes. The modules come in two sizes, one for remotes with a cross section of up to 60mm x 25mm and one for 50mm x 25 mm. Moreover, each size comes in three variants, left, right and middle depending on which side of the MCB rail they will be attached to. That way, it is possible to hide entirely the MCB rail. If a new remote needs to be added later on, all you need to do is replace the rail with a longer one and insert the new module.
The design has side holes for small neodymium magnets to make the modules stick together but in my case it turned out that I did not need to use such magnets because the modules had a tight fit with the rail.