joint account question.

I opened a joint account (wros) about a month ago with my wife and I. I only have 50.00 dollars in right now and learning the ropes. I did put 25 dollars into Sgov as to start something. My question is when my spouse logs in does she use same password etc as was created or will she need her own. Also she has an Ira with not much in it she want to transfer over but when we started the process it wants to transfer under my name. How do we change it so its under her name. we are really new at this. Thanks