How to create three graphs with two Y-axises

[evil-shrike]

Hi!

I'm trying to create a list chart with multiple Y-axis (left/right).
But the problem is that I need to have several graphs attributes to one (left) Y-axis.

I'm using ApexChartsVue

chart: {
  options: {
          yaxis: [
            {
              title: {
                text: 'Conversions',
              },
            },
            {
              opposite: true,
              //seriesName: 'Ads',
              title: {
                text: 'Ads',
              }
            }
          ],
  }
}

and then I have two graphs for "Conversions" axis and one for "Ads" axis:

      data.value.chart.series = [
        { name: 'treatment', data: test_data },
        { name: 'control', data: control_data },
      ]
      if (conversions.ads_metrics) {
        data.value.chart.series.push({
          name: 'Ads',
          data: conversions.ads_metrics.map(i => { return { x: i.date, y: i.unique_users }; })
        })
      }

As I need to distinguish the first two graphs (for Conversions axis) I gave them names and they can't be a common name of the axis ("Conversions").
So when these graphs are rendered I can see that the right Y-axis correlated to the 'control' graph (the second one of the three). And the 'Ads' graph is left without axis. I can understand why it's happening.
So my question is how it can be achieved - attribute two graphs with different names to a single axis in multi-axises configuration?