If you are enrolled in more than one class, you will need to reach out and contact BOTH of your teachers. You will only need to complete ONE Orientation assignment and you can submit the same assignment to BOTH classes. You must however, meet all requirements for each class separately. You will need to meet whatever weekly requirements each teacher has for each class.
Also remember you will need to devote sufficient time to each class. Only lab classes such as Biology or Chemistry allow for submission of the same labs to both classes. All other classes will require unique submissions for each class. Be sure to set aside ample time for each class.