Sam - in the authoring tool the cycling through the hotspots is done by setting "Cycle through item pagination" to true and "Hide pagination" to false. (Equivalent in the framework is "_canCycleThroughPagination": true,) etc

I'm not sure about combining pins - I guess you want to just have them click on the picture once and be able to see all the  items in one go. Have you tried just setting the pin values to all the same top and left?

"_canCycleThroughPagination": false,