My recommendation is to try Qlik Sense Cloud Business. With QSCB, you are able to have up to 3 separate streams (rather than 1 in your current version). Each stream can be populated with different apps and you can define which users have access to what stream.
Feel free to trial it for 30 days, absolutely free -- Qlik Sense Cloud - Upgrading to Qlik Sense Cloud Business - YouTube
Cloud Success @ Qlik