Question about Appoinments Plugin

I cant seem to get the Appointments+ working and was wondering if you can give me some guidance or if there is any tutorials.
The site I am working on rents out meeting and business offices. They have 5 offices and each office has 3 slots (8 to 12:30 \ 1 to 5 \ 1:30 to 10) Monday to Sunday.
but I cant seem to get it so it allows you to book those times in one calendar, it is very confusing.
Hopefully someone can point me in the right direction

Thank you s much for any help you can give me