Short answer

You can view up to 8 charts simultaneously on TradingView through Arrow web by selecting a multi-chart layout.

Steps to set up multiple charts

Click on Select Layout.

Choose the number of charts you want to view (up to 8 charts).

Click on each chart window and enter the instrument name.

Click on Save.

The instrument can also be added by clicking on the layout and then clicking on Chart on the instrument.

You can save multiple chart setup as a custom layout and reload it anytime.