Here is a simple guide on how to load Voice Changer in Logic Pro X.
1) After the installation, check if the relevant plug-in file is correctly installed on your computer. You can verify this by checking the following path for the Voice Changer binary.
2) If everything's ok, launch a project in Logic Pro X and create an empty audio track or use one from your project.
3) Open the mixer, which shows the channel strips for your tracks, by pressing the mixer button
4) When the mixer launches, find the audio track that you want to insert your plugin and click on the Audio FX slot to load it.
You are ready to get creative with your voice!
Note: If for some reason, you cannot see Voice Changer in the Installed Effects list, go to Logic Pro X> Preferences> Plug-In Manager
Select your plug-in and click the Reset & Rescan Selection button at the bottom.