How to add skip forward xyz

<advancedsettings>
  <seeksteps>10,30,60,90,120,300,600</seeksteps>
  <musiclibrary>
    <backgroundupdate>true</backgroundupdate>
  </musiclibrary>
  <videolibrary>
    <cleanonupdate>false</cleanonupdate>
  </videolibrary>
</advancedsettings>