Please Explain About Deleting & QT's:

Deleting: On the left side there is Asset Manager can you delete items in there and will they still be on your page? The same for Studio: Images, Videos, Audio and Apps. and Workspace? I guess what I am asking is what is safe to delete when you don't want them deleted due to space allowed. QT's: I am a little confused on still b/c I don't know who is the Original one that started the QT unless I see it in the Bell icon. Maybe in the Chat Room we should be placing our art work in there instead of on our page and put Original QT persons name then the name of the subject then the creators name and everyone else that is on the QT list? For Example and this is for the newbies: QT: Original by @archangeltara Kitsune @whoever Enjoy if you like it. If you don't want to be on this list, just let me know. @antares @aqualemonade @base451121 @Belinda @Biscuit @CaylaCatz @charlypalermo @Cheinia @ChildNerd @chris70 @DavidP @dovonko @elkanthe @elysian @EternaSky @faerierealm @fantasydesignink @germancowboy @gman @gummiefish @Hephzibah @Hiths @humtum8182 @IndoAIArtist @justrob @King @kirito @mim86 @nametaker @NickWolf @NielsCarlsen @notyourcleo @PabloArtStation @panos @paulie @pocahontas @Sealine @SkarletFever @sonny001 @southamericanmyth @standartis @suga2309 @strixowl-47 @TesaranJ @TheBard @TTRPG_Player @thedreamcatcher @To4kawa @Troxley @Unleashed @winter_witch @archangeltara Thanks in advance