Indian Passport- 30D Visa-Free Access to Macao is Valid for how many entries within how many months?

I am having Indian passport, I am in Macao currently on 30days visa-free access as visitor, please can anybody let me know, this visa's are Valid for how many entries within how many months?

Means if before my current free visa expire (on 29th day of visa expiry) I have to leave Macau and go back to India but I have to come back within 2 days, is this possible? do I have permission for that or is their any rule??