How should I mark my availability?

Hi Rover community, I was just approved and have a few questions for you!

First, I am a full time student so my availability is a little weird with my class schedule. I have availability with in all of the time frames but not the complete time frame. For example, tomorrow I am available in the morning but not the evening. Is there any way to mark specific availability for specific days. Also another example, on MWF I am available from 6-8:30 but not 8:30 to 11. Any ideas about how to approach this?

Second, if there is anyway out there in the greater Boston area, do you tend to get a lot of clients?

Thank you!