Follow the steps to add password in WhatsApp:

1) Go to the Google Play Store in your android device.

2) Search for the app called CM Security and install it in your android device.

3) Once installed successfully, open the app (CM Security). It might take few seconds to open.

4) Tap on the lock icon shown on the top of the screen.

5) Click on the check-box shown next to WhatsApp to select it and then click on Protect button shown at the bottom.

6) It will ask you to set the new unlock patter. Set the pattern as you like.

7) Again confirm the same pattern.

8) Click on Done button.

 

Once you click on Done button, the pattern security password will be added in WhatsApp. Whenever you will open WhatsApp it will ask you to provide the pattern password.

1. Hide WhatsApp group photos and videos from gallery

Most of us dont have much control over what content is pushed to our phones via WhatsApp groups, and this content showing up in your phones gallery can be a huge problem.

WhatsApp has now added the option to hide media from particular groups in the gallery. Just open a WhatsApp group and tap on the group name to access the option (as shown in the image). This method wont remove already existing WhatsApp images in your gallery (you will have to delete them) and will hide new incoming media only.

(Source:https://www.smartprix.com/bytes/new-whatsapp-tips-and-tricks)