I am creating a model which is made up of several sub-models, I would like to be able to have a choice of sub models as a parameter to the larger (overarching) model. This is because to run all the sub models will be time consuming and may not be needed. All the sub-models are in one toolbox. Is it possible to have a tool (model) as a model parameter and list all the tools within a toolbox as a drop down list to choose from? Any ideas would be welcome?
