Me again :)
I have confirmed from the Citrix engineer that (as Dragan correctly wrote) each user of my application will have a separate memory space (hence each user will have a user ID and password). And I wrote to the Citrix engineer that my app needs a minimum of 2 GB of RAM (just a guess on my part :)).
But now I am thinking. If 20 users log into the Citrix server to use my app and each is allocated 2 GB or RAM, would they (Citrix engineers) need to have the server with a minimum of 40 GB of RAM?
"The creative process is nothing but a series of crises." Isaac Bashevis Singer
"My experience is that as soon as people are old enough to know better, they don't know anything at all." Oscar Wilde
"If a nation values anything more than freedom, it will lose its freedom; and the irony of it is that if it is comfort or money that it values more, it will lose that too." W.Somerset Maugham