Yes, it is now possible to trade from Microsoft Excel, not only just trading, you can even build a excel trading platform with our DotNet library if you are a developer.
If you are new to Algo Trading, then try exploring the strategies at https://codeadvisor.in/code-advisor/. We already have some famous strategies coded in VBA/AFL (like ORB, Levels Breakout, Supertrend etc). You can use these strategies to get started quickly or use as a reference to build your own strategy. We will periodically add new strategies and codes that are available in public domain.