our documentation has a good example of the TokenList component usage: link.
To use TokenList your entity should have a field with Collection type, for example in your case the Employee entity should have a field List or Set.
Then you should declare Datasource with an editable entity and nested CollectionDatasource which will store your field (List) and bind your TokenList to the previously declared CollectionDatasource.
If it is not unclear I can prepare a small demo project.