We are developing a Marketing Cloud App for the IMH (Interactive Marketing Hub), and at the moment we are not clear on how and where the FTUX (First Time User Experience) page should be implemented. This is mainly because we don’t know how to emulate the installation process (the drag install) in development. We tried few free applications and it seems that they don't have the FTUX page (after the installation they show directly in the marketing cloud environment).
This confuses us because according to ExactTarget documentation FTUX and SSO are the minimum requirements for a HubExchange app.
Any ides or clues that could point us in the right direction would be really helpful.