In order to change the template of the current website from webadmin.
Kindly login to your webadmin login using the url given while setting up your Reseller/Distributor Account,
For example
http://demo.shreeweb.com/webadmin/
Username/Password supplied to you to login under your branded domain url.
once you have logged in
Click System Settings which will open up all the menus to manage your website system settings.
Click Website Themes and change to whichever you wish by selecting any given template there once done
For example you select travelportal theme after you have selected the radio button. Click Save to apply new theme please note changing theme doesnt leads in lossing any data which you have on your website everything is intact.