My visa going to expire on 5 June...how to extend

We would like to inform you that .The visitor will be required to extend the entry permits. In case of visitation and tourism, the visitor will apply for the extension through the sponsor who issued the visa. All types of visit visas may be renewed for two times regardless of the basic duration of the original visa. The fee for the extension of the entry permits, which is 600 dirhams per extension.
The tourist or visit visa shall be extended by 30 days before the expiration of the visa so that you may benefit from the extension decision as she will not be able to obtain the extension if she exceeds the visa's period and will be obliged to leave the country and return with a new visa.