Can save all tables as another names

Hi, someone can help me
We want to estabilish 2 calendar for 2 different group users.
How to change the table's name in database for the specific demand?
Thank you very much <img src='https://asprunner.com/forums/file.php?topicimage=1&fieldname=question&id=8815&image=1&table=forumtopics' class='bbc_emoticon' alt=':)' />