pause some items in the global queue

It would be very nice if it is possible when you have a big list from different sources on the queue, first download from one source or even if you have several files to download from the same source to be able to set which ones to download and which ones to hold for a later download.

example if I have on the queue folder a, b,c and d for download, i set up that when i star to download only b and d, while c and a are suspended.

Why no use the sorting for that?