SolrSearch - Replace default Search, Language Support

1. With the default installation of SolrSearch the only search box that is actually querying Solr is the public page normal search box. The other search boxes (public page - advanced search and admin search) are not. How can i change this?

2. How can i configure solr to index Greek words? I found this ( but its not working.

Omeka: 2.4
SolrSearch: 2.3
Solr: 4.6

Thank you!