Question regarding the synching

Hi,

We have a few questions:

1) Can this support a use case that there can be more than 1 master site, and each has its own list of subsites to gather user information from?

2) Let’s say we have a group of subsites all synched using this plugin. Calling it site Group X. Once a user signs up to any of the subsites in Group X, he is automatically added to other member sites in Group X?

Thanks a lot.

Jing