I can see the Yammer MSI available now (link below).
Does anyone know where the supporting documentation for the MSI is? It behaves a bit differently to what I'm used to (in my limited experience). The MSI creates a Computer Wide Installer on the target machine, then through some mechanism installs to any user that logs on (I think).
https://support.office.com/en-us/article/Yammer-for-Windows-and-Mac-50920c05-cbfc-4f11-8503-e20fb2e6...