Macau Visa from mainland China

Hi

I am in Shenzhen, I have china double entry visa, my visa will expire after 5 days. This is my first entry in China and i want to avail second entry as well.
For this purpose i want to get a Macau visit visa on urgent basis so that i stay 1 night in Macau and again enter in China and get permission for second entry. in this way i can stay in China month more and complete my work., Wow and where should i apply for Urgent Visa to Macau.