Create a special user or rules

[pmminov]

Hi

I need to create a user that could browse and write in all the spaces, but couldn't rewrite or erase a file

How can I do that?

I ask this because because I'm using CMIS with Liferay to write in Alfresco, just want to limit that user to prevent overwriting of an existent file which is being managed from alfresco

[stevegreenbaum]

I believe you would grant them "Contributor" role for the spaces which would allow them to read/add, but not delete.

[rafaelscg]

look into:
http://wiki.alfresco.com/wiki/Security_and_Authentication#Adding_another_role_to_the_default_list

i can create specific roles by users.