During the Idryll boarding of the Enterprise u go to the cargo bay to help Korban. After you repel the invaders the security systems kick in and seal all exits. How do you get out of the cargo bay to go to sickbay?
next to korban there is a yeffries tube, approuch it and press ur use button, then the door will open:D
There is a jefferies tube that you must go through, just scout around for it and you will find it.
Hope this helps:p
Thanks for the help - I'll give it a try.