Hi,

You can override the presales_ids field to always fetch data with sudo(), so it ignores record rules when viewed through a Lead:

from odoo import models, fields, api

class CrmLead(models.Model):

    _inherit = 'crm.lead'

    presales_ids = fields.One2many(

        'presales.model',

        'lead_id',

        string="Presales",

        compute="_compute_presales_ids",

        store=False

    )

    @api.depends('id')

    def _compute_presales_ids(self):

        for lead in self:

            lead.presales_ids = self.env['presales.model'].sudo().search([('lead_id', '=', lead.id)])

Hope it helps.

Use the groups attribute in your view on the field in question, i.e.

<field name="presales_ids" groups="[module].[group_name]"/>