Go back to Kodi Main Menu again > Click on Add-ons > Program Add-ons > Then click on Ares Wizard > It will automatically install and load the Wizard which will take few minutes.
Once it is installed you need to click on Install from Repository option > Then find and click on Ares Project > Go to Program Add-ons > Ares Wizard > Install > It will take few minutes to install.
How To Install Ares Wizard on Kodi Krypton Version 17 or Higher How To Install New Ares Wizard on Kodi – Video Guide