Thanks!
Susan
<asp:repeater id="rClientTable" runat="server">
<itemtemplate>
<tr>
<td class="normal" style="border-bottom:solid 1 black">
<asp:CheckBox id="chkClient" OnCheckedChanged="ClientCheckBox_Changed" AutoPostBack="true" Runat="server" Text='<%# Container.dataitem("BusinessName") %>' />
</td>
</tr>
</itemtemplate>
</asp:repeater>
<telerik:RadAjaxManager ID="RadAjaxManager1" runat="server" OnAjaxSettingCreating="RadAjaxManager1_AjaxSettingCreating">
<AjaxSettings>
<telerik:AjaxSetting AjaxControlID="RadScheduler1">
<UpdatedControls>
<telerik:AjaxUpdatedControl ControlID="RadScheduler1"/>
<telerik:AjaxUpdatedControl ControlID="RadCalendar1" />
<telerik:AjaxUpdatedControl ControlID="pnlScheduler" />
<telerik:AjaxUpdatedControl ControlID="pnlAppointmentForm" />
</UpdatedControls>
</telerik:AjaxSetting>
<telerik:AjaxSetting AjaxControlID="RadCalendar1">
<UpdatedControls>
<telerik:AjaxUpdatedControl ControlID="RadScheduler1"/>
<telerik:AjaxUpdatedControl ControlID="RadCalendar1" />
<telerik:AjaxUpdatedControl ControlID="pnlScheduler" />
<telerik:AjaxUpdatedControl ControlID="pnlAppointmentForm" />
</UpdatedControls>
</telerik:AjaxSetting>
<telerik:AjaxSetting AjaxControlID="rClientTable">
<UpdatedControls>
<telerik:AjaxUpdatedControl ControlID="chkClient"/>
</UpdatedControls>
</telerik:AjaxSetting>
<telerik:AjaxSetting AjaxControlID="RadAjaxManager1">
<UpdatedControls>
<telerik:AjaxUpdatedControl ControlID="DisplayMessage" />
</UpdatedControls>
</telerik:AjaxSetting>
</AjaxSettings>
</telerik:RadAjaxManager>