Sessions info in Admin Console

Edit: Never mind… I asked this a while ago and was answered then

When a user shows up multiple times in the session info in the Admin Console, does that indicate that a previous sessions might not have been closed properly?

For example, in the pict below, user highlighted in yellow, shows 3 sessions: one “In Use”, and two “Available”.

Are the “Available” sessions ones that were disconnected, but not closed properly? Like if you just turn off the client w/o exiting the client program?

And the user in blue, has two “in Use” sessions (1 of type “Default User” and the other “Enterprise Proc…”), and also has two “Available” session (also a Default and a Enterprise Proc…).

Why do some users only have a Default session, while others have a Default and an Enterprise Proc session?