schedule tasks by date and time

i’m new to project; just a couple days into it actually - what i’m trying to do is schedule a reoccuring task specific to date and time. by date is easy enough, but i want it to start at 9:30 am and end at 10:00 am.

i also notice that task itself will show the duration in outline level 1 as 8hrs long when the duration in outline level 2 shows the duration as .5hrs; why is it doing this?

thanks for any thoughts/relies