Custom Addin with Ribbon in Excel

addin.xlam

#Rels

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<Relationships xmlns="http://schemas.openxmlformats.org/package/2006/relationships">
<Relationship Id="rId7" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/extended-properties" Target="docProps/app.xml"/>
<Relationship Id="rId1" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/officeDocument" Target="xl/workbook.xml"/>
<Relationship Id="rId6" Type="http://schemas.openxmlformats.org/package/2006/relationships/metadata/core-properties" Target="docProps/core.xml"/>
<Relationship Id="rId5" Type="http://schemas.microsoft.com/office/2006/relationships/ui/extensibility" Target="customUI/customUI.xml"/>
</Relationships>


#customUI folder

<customUI xmlns="http://schemas.microsoft.com/office/2006/01/customui">
  <ribbon>
    <tabs>
      <tab id="SG1" label="Reports" >
        <group id="customGroup1" label="Payments" >
          <button id="customButton1" label="Invoice Report" imageMso="AccessListCustom" onAction="InvoicesMain" />
	<editBox id="MyEditBox" maxLength="1" sizeString="WW" label="Delimiter" imageMso="TableColumnsInsertRightExcel" getText="UpdateEditBox" onChange="SetTextValue"/> 
        </group>
	<group id="customGroup2" label="CSV" >
	<button id="customButton2" label="CSV Merge" imageMso="ReviewCompareMenu" onAction="CSVMain" size="large" /> 
	</group>

      </tab>

    </tabs>
  </ribbon>
</customUI>