To install and enable an Expert Advisor (EA) on the chart in MetaTrader, follow these steps:
Make sure Auto-Trading is allowed. You can enable it by:
Going to Tools > Options > Expert Advisors and checking Allow automated trading.
Pressing Ctrl+E to toggle Auto-Trading on/off.
Clicking on the AutoTrading button in the Toolbox at the top of the terminal.
Once Auto-Trading is enabled, you can drag your EA from the Navigator window onto the chart. The EA will start running, and you can turn it on or off as needed using any of the above methods.
This ensures your EA is actively trading or can be paused whenever you choose.