问一个关于ext.net控件的有关问题

问一个关于ext.net控件的问题
控件：GroupTabPanel

问一下 如何取消基本信息前得加号

<%--基本信息 --%>
                <ext:GroupTab ID="GroupTab1" runat="server">
                    <Items>
                    
                    <ext:Panel ID="Panel5" runat="server" Title="基本信息" 
                                TabTip="Tickets tabtip" Padding="10"  >
                                <Items>
                                
                                <ext:GridPanel ID="GridPanel2" runat="server" StripeRows="true" Title="基本信息情况表"
                                        TrackMouseOver="true" AutoExpandColumn="Company" Height="340px">
                                        <Store>
                                            <ext:Store ID="Store1" runat="server">
                                                <Reader>
                                                    <ext:ArrayReader>
                                                        <Fields>
                                                            <ext:RecordField Name="company" />
                                                            <ext:RecordField Name="price" Type="Float" />