Hi,

Try the following code.

<t t-if="record.is_incharge_sign">

    <div class="mb-4">

        <t>

            <h4>Dispatch In-Charge</h4>

            <a class="btn btn-primary" data-bs-toggle="modal"

               data-bs-target="#modal_dispatch">Sign</a>

        </t>

    </div>

</t>

Hope it helps