id,name,model_id:id,group_id:id,perm_read,perm_write,perm_create,perm_unlink
access_grn_user,access.grn.user,model_grn,base.group_user,1,1,1,1
access_grn_lines_user,access.grn.lines.user,model_grn_lines,base.group_user,1,1,1,1