To give access to your acquirer's interior architect, go to your console and hover over the relevant lot. A small "+" button will appear to the right of your buyer's name.
Simply click on it, enter the designer's contact details, then remove the acquirer's role and replace it with the Interior Designer role.
The designer will have access to a more advanced editor than the configurator designed for acquirers, where they can modify partitions, for example.
