contract/agreement/views/res_config_settings.xml

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

    <record id="res_config_settings_view_form" model="ir.ui.view">
        <field name="name">res.config.settings.view.form.agreement</field>
        <field name="model">res.config.settings</field>
        <field name="priority" eval="40"/>
        <field name="inherit_id" ref="base.res_config_settings_view_form"/>
        <field name="arch" type="xml">
            <xpath expr="//div[hasclass('settings')]" position="inside">
                <div class="app_settings_block"
                     data-string="Agreements"
                     string="Agreements"
                     data-key="agreement"
                     groups="agreement.group_agreement_manager">
                </div>
            </xpath>
        </field>
    </record>

    <act_window id="action_agreement_config"
                name="Settings"
                res_model="res.config.settings"
                view_mode="form"
                target="inline"
                context="{'module': 'agreement'}"/>

</odoo>