Hi,

I Think you should create a new computed field and use it in the invisible attrs.

The computed field should look like :

hide_validate = field.Boolean(compute='_compute_can_see')

The compute method :

def _compute_can_see(self):
  for rec in self
    rec.hide_validate = not(self.env.user.has_group(the xmlid of your group))

And finally your view, first your need to add the computed field to the view

attrs="{'invisible': [
'|', 
,'&', ('x', '=', True),('hide_validate', '=', True),

'&',
 ('show_validate', '=', False),
('hide_validate', '=', True)
]}"

Hi Gustave, 

Thanks a lot for helping. I think I see your approach & will try it soon. Just need to study it a bit since I am fairly new on odoo/XML. 

Thanks again, will surely post my result here.