Question:How do you tag someone on youtube?
To do so, please follow these steps:
1. When creating/editing the title/description of a video, type the "@" symbol.
2. Next, add their channel name, and then select it.
E.G, "Learning blogging and SEO with @Koji Agudah."
N/B: You can mention as many people as you want as long as their names fit within the character limit.