A method for forming an apparatus for storing and releasing containers (C1-C15) or such substantially box-shaped storing devices, comprising at least rails (28) having thereon a series of trolleys (14) mobile on the rails, on which trolleys the containers can be carried, the rails being supported by a supporting frame (54), which supporting frame is substantially built up from a series of standard modules, while, for a location, it is determined how many containers (7) are to be potentially storable therein, after which a construction for a supporting frame is determined on the basis of the modules, which modules are subsequently packaged and transported to said location, where the construction is built up from at least the modules.