Split and Merge Tool by Kami is a separate add-on app that you can use for free with full access available to Work and Schools users. If you already have a Kami account, you can sign in using your Kami login details. 

With Split and Merge Tool by Kami, you can easily combine and separate multiple files. You can also, delete pages, rotate individual pages and rearrange them to a new one. Watch our demo below: