I installed Indigo and first time it was okay, Config Wizard was there along with everything else. I then removed it and installed again but now the Config Wizard option is not there. I've tried several times and Config Wizard is still missing.
Please note the wizard was removed a while back and might not be part of Indigo anymore. You can try and remove Indigo, restart Kodi and reinstall Indigo see if it come back but if this will not reinstate your wizard, I would assume it was simply removed from Indigo.