server-backend/base_user_role_history/views/res_users.xml

<?xml version="1.0" encoding="utf-8"?>
<!-- Copyright 2019 ACSONE SA/NV
     License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl). -->

<odoo>

    <!--FORM view-->

    <record model="ir.ui.view" id="res_users_form_view">
        <field name="name">res.users.form (in base_user_role_history)</field>
        <field name="model">res.users</field>
        <field name="inherit_id" ref="base.view_users_form"/>
        <field name="arch" type="xml">
            <div name="button_box" position="inside">
                <button name="show_role_lines_history"
                        help="Roles history"
                        class="oe_stat_button"
                        icon="fa-history"
                        type="object">
                    <div class="o_stat_info">
                        <span class="o_stat_text">Last update of roles</span>
                        <field class="o_stat_value" name="last_role_line_modification"/>
                    </div>
                </button>
            </div>
        </field>
    </record>

</odoo>