We recommend checking your contract with the publisher before submitting your permission request as some publishers do not require you to formally ask for permission to reuse your own content. However, many publishers will require you to submit a request to reuse your own content if you are reproducing it within a completely new product.
You can indicate that you are the author of the original work in the 'Content Details' section of the online permissions form.
Author reuse is sometimes granted free of charge, but this is entirely at the discretion of the publisher of your original publication; they will determine the parameters of rights granted and if any fees are necessary.