Hi folks I am happy to tell, that with help of you all, I now have nearly finished entering all the data about my new releases, Thank You all so much for your help!
Now I have this question: from what I read in this page
https://musicbrainz.org/doc/How_to_Add_Disc_IDs
it would be useful that I add a DiscID to my CD album and to my CD single. I have already entered the ISCRs of all tracks, so I am wondering, is there a simple way to add the DiscID to my releases?