I need a mapinfo programmer/expert user

Hello everyone. I have the following issue. I have mapped on mapinfo several stores that will make deliveries to nearby consumers (about 500mts maximum, but this can change). So I built concentric rings on this stores of 500 mts to try figure out the density of the network. The thing is that some circles overlap where others dont. I need to figure out a way to build an area/polygon made up of the intersection of these circles (like a query where if there are less than 5 overlapping circles i want to detect those areas and then join them to create a polygon where i can work in). Lets say try to go those areas again and recruit more stores. If there is a mapinfo expert that can teach me the way process to do this I can pay for the lesson or I could pay a programmer to give me the tool to perform this task changing some parameters like the reach of the stores (it can be 500 mts or 1km or whatever) and the ammount i consider to be ok for the density (it can be 5 overlapping areas or another number).