How to open one or more gmail or facebook account in crome

If you are logged in to a gmail account in chrome, you can not open another gmail account without log out the first one. Same with the facebook account and another e-mails account. But if  you want to open more than 1 account in crome browser then follow these simple steps:

• Just open crome browser.
• then click on crome setting.
• under crome setting click on option then click personal stuff.
• again in the user section click on add new user and new window appear and now you open new gmail or facebook account in this window.
• A new icon is showing in the left side of crome tabs and if you want to change user then click on this icon and change user or add new user for your choice.