Yes, Waves plugins from versions 9, 10, and 11 can coexist. However, installing newer versions like V14 may overwrite or update older versions. To prevent this, you can specifically install new plugins while leaving your older ones unchanged.
If you only see “WaveShell1” but no sub-plugins, your DAW may have scanned but failed to “expand” the shell. In this case, delete your DAW’s plugin cache file (found in folders like %appdata%\VST3\ or within your DAW’s hidden settings) and rescan with the “Verify Plugins” option enabled. Vst Plugin Waveshell1-vst3 11.0-x64 -vst3-
To use this plugin, you would typically: Yes, Waves plugins from versions 9, 10, and 11 can coexist