Now it's time to decide the Qlik Sense installation architecture.
Looking at the requirement, you can suggest that single node architecture is sufficient, as the user base is small and the number of applications which need to be developed is also less.
Because the client needs the latest version of Qlik Sense, you will have only one option, which is shared persistence.
So the overall architecture will look as follows:
You can see from the preceding diagram that the users will try to access Qlik Sense over the internet and the request will be moved to the company's firewall and then ...