Go to https://www.yammer.com/client_applications. Click on the “Register new App” button. Please note, after registering the IoT Nexus™ App - it will be linked to the Yammer network related to your user account. This is the network you will use to access, edit, create proximity chat rooms for use with IoT Nexus™ - Chat.
Consider using a service account when registering your IoT Nexus™ at https://www.yammer.com/client_applications. i.e. “firstname.lastname@example.org”. We recommend using the service account associated with your Office 365 Administrative account, and the one associated with your Dynamics 365 instance.
Once you have registered the IoT Nexus™ app, fill-in the basic information.