EFFICIENT WOODCUTTER (NOT BUG)

Where do I find the line to change it from a tier two node to a tier one node, I looked for quite a while but couldn't find it, my eyes are glossing over now and that's why I'm coming here. Since the owner would most likely know where it is.

        "Amature Miner": {
          "Permission required to show this node": null,
          "enabled": true,
          "max_level": 5,
          "tier": 1, <-----HERE
          "value_per_buff": 0.05,
          "buff_info": {
            "Key": "Mining_Yield",
            "Value": "Percentage"
          },

Changed Status from Pending to Closed