Package in which modellers or teams can create their own elaborations of sub-models, or sub-elaborations of a solution. Within these packages, the modelers have a personal package in which they are free to choose their own layout and develop elements and diagrams. Please note: it is important that agreements are made about the reuse of elements that are present. It is often not allowed to reuse elements present in these personal packages, for example in solution architectures and not at all in enterprise architecture models.