Radzen Data Grid - putting button inside of GroupHeader

Hello,
Is it possible to put a radzen button inside of the header beside the 26 columns showing in the screenshot?

<RadzenDataGrid @ref="_grid" AllowPaging="true" AllowSorting="true" Data="@(filteredOrders ?? _orders)" TItem="ReportViewModel"
                PagerHorizontalAlign="HorizontalAlign.Justify" ShowPagingSummary="true" AllowColumnResize="true"
                AllowVirtualization="true" Style="width: calc(100vw - 70px);" ColumnWidth="170px" PageSize="20" GridLines="DataGridGridLines.Both"
                CellRender="@CellRender" AllowColumnPicking="true">
    <GroupHeaderTemplate>
        <RadzenButton Text="Export XLS" Icon="grid_on" Click="@(args => ExportExcel())" ButtonStyle="ButtonStyle.Secondary" Size="ButtonSize.Small" />
    </GroupHeaderTemplate>
    <Columns>