Ok, I’m not home so I can check the exact wording, but you should be able to set collision presets to custom so that you can specify each channel. That’s a basic feature of UE4, so if you can’t find it do a quick googling 
Ok, I’m not home so I can check the exact wording, but you should be able to set collision presets to custom so that you can specify each channel. That’s a basic feature of UE4, so if you can’t find it do a quick googling 