It seems a bit odd how the itchio desktop application (itchapp) works compared to the website.
If I access my 'collections' from within the itchapp, then it shows this URL : itch://collections/ without any options to move or remove items from a collection. If I want to have full functionality then I have to go to the website here: https://itch.io/my-collections
I feel this is a cumbersome/confusing thing and should be modified to be more newbie-friendly.