In NinjaTrader, the usual way to put the price scale/Y-axis on the right is to open the chart’s Data Series or Chart Properties and set the scale justification to Right.

Fast steps

  1. Right-click the chart and choose Data Series or Properties.
  1. Find Scale Justification.
  2. Change it to Right.
  1. Click OK to apply it.

If it still shows on both sides

That usually means an indicator or another series is using a left-side scale. NinjaTrader support notes you should open Indicators and make sure each configured indicator is also set to Right.

Useful related setting

If your goal is to create space between the chart and the axis, NinjaTrader also has a Right side margin setting in Chart Properties, which controls spacing between the Y-axis and the current bar.

Notes

  • In NinjaTrader 8, the platform documentation also exposes a chart-panel property indicating whether the Y-axis is displayed on the right side.
  • Forum guidance from NinjaTrader support specifically recommends Scale Justification = Right as the main fix.

TL;DR

Set Scale Justification to Right in the chart’s Data Series/Properties, then check indicators if the axis still appears on the left.