Hello Russ Schneider, 

You just need to pass the following inside view action:

<field name="domain">[('company_id','=',2)]</field>

Thanks

Anisha Bahukhandi

Technical Content Writer

Webkul

You can achieve that by using a server action, create 2 act_window then conditionally select them in server action:

    <record id="custom_server_action" model="ir.actions.server">
        <field name="name">Custom server action</field>
        <field name="model_id" ref="my_module.model_my_model"/>
        <field name="binding_model_id" ref="my_module.model_my_model" />
        <field name="state">code</field>
        <field name="code">
if env.company.id == 2:
    action = env.ref('your_module.custom_action1').read()[0]
else:
    action = env.ref('your_module.custom_action2').read()[0]
        </field>
    </record>    

Solution that worked:

<field name="whatever" attrs="{'invisible': [('company_id', '=', 1)]}"/>