 So you just want to merge multiple points together, not a problem. Under geometry, modify topologies, set the minimum distance required to merge points together, and hit weld points. Now that is specific for when you have a hole, but when there's no hole in the geometry, press B, Z, Z-modeler, hover your mouse over the closest edge, right-click, delete, and buy edge loop. Then just left-click the edge, you're done. Hope that helps and as always I hope you have a fantastic day and I'll see you around. you