Is it possible to create new members in bulk as an administrator and send users a subsequent e-mail to set a password for their account?

Independent of the first question, is it possible for new members to be automatically subscribed/joined to their relevant groups upon their first sign-in?

For example, we want to on-board 50 employees a week and automatically create accounts and subscribe them to various groups in discussions. Having a more robust set of administrative tools would allow us to avoid having to train or remind new employees to add themselves to these group. And automatically subscribing new employees ensures that everyone who is part of specific teams get notifications from day one.

Thank you!