In MetaTrader, you are able to customize your charts to your liking.
There are various settings which can be enabled, however, for this demonstration, we will be showing the "Ask Line".
Let's go through the process:
> Right-Click anywhere on the chart.
> Select Properties.
> You are able to amend the settings of your chart here, including the Ask Line.
> If you would like more options, click on the Common tab.