Symbol libraries are referenced as follows:
Symbol selection ( Insert > Symbol) only displays those symbols from the stored symbol libraries whereby symbol libraries are identified by name (without the path) in projects. store them in the project, or delete stored libraries. In this dialog you can add symbol libraries to the current project, i.e. For symbol libraries you must then open a symbol library in the Open symbol library dialog and click. You have opened a symbol library or symbol under Utilities > Master data >.
Options > Settings > Projects > 'Project name' > Management > Symbol libraries.