Installation.
DOL Matrix is an invite-only TradingView script. Save your exact TradingView username in your account area after subscribing, and access is applied to that handle.
Open TradingView, go to Indicators, then Invite-only scripts, and add DOL Matrix® - Dealing Range & Liquidity to your chart — that is the full title it is listed under. If it is not there yet, allow a few minutes after subscribing and reload the page.
Start on a liquid market at a timeframe you normally trade, with the defaults. Change one setting at a time and watch what moves on the chart.