Step 1. Go to MetaTrader Market product page.
• Via the terminal
Enter 'volumebyprice.com' in the search box on the top-right corner of the toolbar.
or
• Via web browser
MetaTrader 4: https://www.mql5.com/en/market/product/35577
MetaTrader 5: https://www.mql5.com/en/market/product/35579
Step 2.
Sign in to your MQL5.com account (if you do not have an account, sign up here ). Click the 'Download demo' button.
Step 3.
Open the 'Strategy Tester' window:
Select the 'Volume by Price MT4' or 'Volume by Price MT5' indicator.
Optionally adjust default configuration via the 'Inputs' tab. Click the 'Start' button.
References
"Testing Visualization - MetaTrader 5 Help" https://www.metatrader5.com/en/terminal/help/algotrading/visualization
"Setup - Tester - MetaTrader 4 Help" https://www.metatrader4.com/en/trading-platform/help/overview/strategy_tester/strategy_tester_setup