I guess what you are looking for is clustering. Please have a look at this forum post where this topic was already discussed and let me know if this is what you were looking for.
about 5 years ago
We have done POI rendering on Wikitude SDK3.3.1. We have noticed some of the POI are overlapping since the direction of these POI fall on the same path. We would like to know, is it possible to view the details of the POI which are at the back, in the AR world.