To access Miva Manager, select "E-commerce" from the main menu, and select "Miva Manager" from the e-commerce menu.  This option will only be available if Miva Manager has been added to your domain for e-commerce.

Miva Merchant is a browser-based store front development and management system. The modular organization allows the Miva Merchant to be upgraded "live", without any changes to the core system and without taking the store down in the process. All Miva Merchant application and database files are 100% cross platform. You can enter colors, fonts, images, layout, etc all from the online administrative interface.