How to use the cloud together by encrypting files?

Question

NAS

there is a mail.ru cloud , there are several NAS-s of different people,
is it possible for people to log in to the cloud client to choose to synchronize only their own folder, so that when choosing and downloading other people's folders, they are not readable? (of course, this will need to be done so that changes in the cloud are not applied to clients and automatically canceled)
I can imagine this, for example, by creating a virtual disk, which will be an encrypted version of a regular folder and synchronized with the cloud.

Answer 1

of course - with a trucrypt container or the like, so you can