How can I set the vscode extension custom icon in activity bar to the first?

I added one icon to the activity bar, and it works well. I need to put it at the top of the activity bar (at the top for Resource Management), how can I reach the requirement?

Now the code like this: Is there any option can change the order?

"viewsContainers": {
  "activitybar": [
    {
      "id": "thingio_sidebar",
      "title": "ThingIO Options",
      "icon": "media/dep.svg"
    }
  ]
}