We are using many more mobile devices now and have a requirement for certain users to be using the Websense as a proxy in the premises.Along with this giving access to certain Policy's members on certain Instant Messengers like WhatsApp(http://www.whatsapp.com/) ,IMO(https://imo.im/) and many others iOS and Android Apps.
Likewise Skype is mentioned in the Websense Content Gateway->HTTPS Management->Tunnel Skype
By having this feature within for certain Policy Members can be helpful to connect them for their meetings,from anywhere within the premises through mobile devices.