My Live Streaming Site is set up for Clients to register

Hello, My Live Streaming Site is set up for Clients to register for service, I need them to have the wordpress backend for their admin functions and mulitple themes to choose from for their actual live site for streaming (currently using the LiveTheme Template)
* Trying to customize the admin menu to have accordion like menu
* Trying to have a page that has tabs within the page
Am I asking to much or can this happen