i got it now. now i have three clanders, one for youtube, every work day from 5:30PM to 7:00 PM. a general internet which i didn’t specify for any webside ( leave it blank), from 8am to 11PM. while school homework website available almost 24 hours. however, i do see my teen still can access youtube at 8pm and 9 pm. on the other hand, I can’t access youtube on my computer after 7:00PM. I thought it may have a bug on the general clander, if you are on youtube, you can keep access it even after the time limit…I have not not really verify it yet. I would suggest in clander, you have allow website, why not add a block website just like the profile. you have allow and block…