Using this post I am going to illustrate how to lock your screen with very few steps.
I will not type to much & will be writing straight to points. So, Here are the steps to achieve Quick Screen Lock.
1. Open Key-chain Access using Spotlight Search or go to /Applications/Utilities & run it.
2. Now, Go to “Key-chain Access” menu as illustrated in image below.
3. Switch to General Tab
4. Check on the “Show key-chain status in menu bar”
5. Now, you will be able to view new lock icon on the Menu on the right side ( for example illustrated in image below )
6. Click on that lock symbol.
7. Now click on lock screen menu-item.
Hope this will help. Please let us know your feedback on it.