Overview section contains basic details of the model. Note that the overview page will have only some fields editable if the model belongs to an external organisation.
Overview page for the model owners
Overview page for the Model owners have more editable options. For example the below screen shot shows the different options available in the overview page. The options highlighted in a red box are only visible to the providers.
Overview page for the external modellers(With no access to the Source files)
If the an external modeller accessed a model that belongs to another organisation, the path and token to access the Source files will be hidden. User has the ability to request access to the Source files from the button 
. Once the request is sent, the creator of the model gets an email notification and he can approve/reject the request listed in Model Details> Requests.
Overview page for the external modellers(After access has been granted)
Once access is granted for a specific model, external modellers will be able to see the overview page similar to below. The path is now displayed as a hyperlink and the token will be hidden.
Add a image of the model to give a high level picture
Use smaller headings to break down what you have already written here ?
Maybe use hyperlinks to link the other pages in this section ?