OpenCart Community

Hi guys I need some help from you. I am using opencart for almost 4 month now I add one of my friend who help me to update my products listing,content and other promotional activity but the problem is that when we both login at the same time one will see the session out dialog box can anyone tell how we fix this issue.

Simple!
Just create a new user_group with full permissions, and a new user (for your friend) in that newly created group.
So then he can login with different credentials and a different Token.