You can order requests within a collection by left clicking and holding on a request, and then drag it into what ever position you want within the request and drop it or you can even drag it into another collection and drop it there. I will, at times, duplicate a request within a collection and drag the “copy” to another collection saving me to have to rewrite all the logic into a “new” request.
The same can be done with “folders” within a collection, but it appears that folders will always be arranged on top of “requests”