I did not create a new button. However, I had to overwrite the context of the original button and in fact I would just like to increment the context of the button without having to overwrite.

<record id="workshop_vehicle_crm_opportunity_form_view_inherit" model="ir.ui.view">
       <field name="name">workshop.vehicle.crm.opportunity.form.inherit</field>
       <field name="model">crm.lead</field>
       <field name="inherit_id" ref="crm.crm_case_form_view_oppor"/>
       <field name="arch" type="xml">

           <button name='%(sale_crm.sale_action_quotations_new)d' position='attributes'>
               <attribute name="context">{
                   'search_default_partner_id': partner_id,
                   'default_partner_id': partner_id,
                   'default_team_id': team_id,
                   'default_campaign_id': campaign_id,
                   'default_medium_id': medium_id,
                   'default_source_id': source_id,
                   'default_vehicle_id': vehicle_id,
                   }
               </attribute>
           </button>

           <xpath expr="//field[@name='partner_id']" position="after">
               <field name="vehicle_id" string="Vehicle"/>
           </xpath>
       </field>
   </record>

Hello Muhammed. for Your action button hiding query -->  You may replace it with attributes="replace" . eg:   <xpath expr="//button[@name='%(sale.action_quotations_salesteams)d']" position="replace"/>
I have not seen action hiding button in the base code itself.