Hi – is this a preset you created? H910 Single/Dual doesn't come with a preset called 'Fake Leslie'.
If it's one you created, and you saved it to the presets folder (C:Users<username>DocumentsEventideH910 HarmonizerSingle Presets on windows, ~/Music/Eventide/H910 Harmonizer/Single Presets on mac), then it should be visible in the preset menu. If you saved it outside that folder, you'd need to use the "LOAD" button to located it on disk and reload it.