Yes, you can effortlessly secure a specific chat and hide it inside the YoWhatsApp applications.  1. To do so, first, you have to long-press on the chat which you want to hide.  2. Afterward, click on the three-dot and tap on the Hide chat option.  3. Add the pattern password according to your wish.  4. Finally, tap on the YoWhatsApp and enter a password to access chats.