The most common shelf-marks for Arts Management are:
NX760-NX770 = Administration of the arts
NX775-NX777 = Voluntarism in the arts
NX798-NX820 = Arts centers and facilities
You will find the main section on Floor 2 of the McClay. Recommended books will also be found in Short Loan on the Ground Floor of the McClay Library.
Arts Management is a broad topic, so not all the material you need will be found in this area - ask your subject librarian if you've problems locating material.