Keep track of what your institution offered students if the body that governs your field's CEUs allows self-certification. This includes what courses were offered, what was taught, how long the courses were and how many students were enrolled. On a yearly basis, you will usually have to submit to the governing body a list of what the institution offered.
Submit the agenda for the course(s) and proof of attendance to your certifying body if post-approval is allowed. Once the courses are over, the body will determine the number of CEUs that can be approved and which participants can use those CEUs.
Submit a detailed program outline of the CEUs you will be offering if your certifying body allows pre-approval. You will need to ensure that you list every aspect of the course(s), including who will teach them, what will be taught, what tools/materials will be used, how long the course(s) will be and how students will be evaluated.