In some authors have 2-year contracts, others, 3-year contracts. In all cases, the first step in changing agencies is to tell the agency you want to move and ask to be taken off [Write to and we will help you] its books.
Once the first agency has taken you off its books, you are free to come to EKKI. And if you are not happy at EKKI and wish to leave, remember that our contract specifies that you can leave whenever you want to and you will be taken off our books automatically.