Create your preset in Main » Presets » Presets Settings section of your reseller admin interface.
Add your username, API password and preset hash to JTM settings
Memory Limits
You may need to add following line to .htaccess file in Joomla installation root: php_value memory_limit 32M to avoid memory limits problems upon JTM setup.
Frontpage
You can select template categoties and types using JTM Frontpage menu link settings.