partner-contact/crm_capital/views/crm_lead_view.xml

<?xml version="1.0" encoding="utf-8"?>
<openerp>
<data>

<record model="ir.ui.view" id="crm_case_form_view_leads_capital">
    <field name="name">CRM - Leads Form with capital info</field>
    <field name="model">crm.lead</field>
    <field name="inherit_id" ref="crm.crm_case_form_view_leads"/>
    <field name="arch" type="xml">
        <field name="partner_id" position="before">
            <field name="capital_country" placeholder="Capital country"
                   options='{"no_open": True}'/>
            <field name="capital_registered"/>
            <field name="turnover_range" placeholder="Turnover range"
                   options='{"no_open": True}'/>
            <field name="turnover_number"/>
        </field>
    </field>
</record>

<record model="ir.ui.view" id="view_crm_case_leads_filter_capital">
    <field name="name">CRM - Leads Search with capital</field>
    <field name="model">crm.lead</field>
    <field name="inherit_id" ref="crm.view_crm_case_leads_filter"/>
    <field name="arch" type="xml">
        <filter string="Sales Team" position="after">
            <filter string="Capital country"
                    domain="[]"
                    context="{'group_by': 'capital_country'}"/>
            <filter string="Turnover"
                    domain="[]"
                    context="{'group_by': 'turnover_number'}"/>
        </filter>
    </field>
</record>

<record model="ir.ui.view" id="crm_case_form_view_oppor_capital">
    <field name="name">CRM - Leads Form with capital info</field>
    <field name="model">crm.lead</field>
    <field name="inherit_id" ref="crm.crm_case_form_view_oppor"/>
    <field name="arch" type="xml">
        <field name="partner_id" position="before">
            <field name="capital_country" placeholder="Capital country"
                   options='{"no_open": True}'/>
            <field name="capital_registered"/>
            <field name="turnover_range" placeholder="Turnover range"
                   options='{"no_open": True}'/>
            <field name="turnover_number"/>
        </field>
    </field>
</record>

<record model="ir.ui.view" id="view_crm_case_opportunities_filter_capital">
    <field name="name">CRM - Leads Search with capital</field>
    <field name="model">crm.lead</field>
    <field name="inherit_id" ref="crm.view_crm_case_opportunities_filter"/>
    <field name="arch" type="xml">
        <filter string="Sales Team" position="after">
            <filter string="Capital country"
                    domain="[]"
                    context="{'group_by': 'capital_country'}"/>
            <filter string="Turnover"
                    domain="[]"
                    context="{'group_by': 'turnover_number'}"/>
        </filter>
    </field>
</record>

</data>
</openerp>