Hai Friends , I am new for OpenERP , having some Question while installing new module .
- While install new module through OpenERP apps , the authentication is required . My Question is , For what type of modules authentication are required ? 
- Also , Sign up to install apps It's free up to 3 users means ? 
Its a basic thing but difficult to understand , so please clarify my doubt .
Thanks & Regards OMPRAKASH.A
 
                        
I also have this problem and start to confuse about this. Could anyone give some explanation, please?