How to open PoB Merge

[FreedomKing100]

Hey, I wanna merge a few pob just into one. I have standard pob, but how to open this Merge Apllication? I don't see any exe or apllication for start.

Best regards,
Freedom

[FreedomKing100]

OK, I found solution. But yet: how to do I have able to change beetween configs page pobb.in page (dmg, res etc.)? I have always just one of them, which is currently marked, so how to swap beetween? Gear / gems / tree they all worked, but what with config. It is possible?