1. In the Admin section, you can create a new flow by clicking 'App Bazaar ' -> Installed Apps  tab. Then click on 'Create App' and enter a flow name

  1. To edit a flow click on  'App Bazaar' -> 'Installed Apps'->'Edit Call App' link 
  2. You can drag and drop voice and sms applets to create your flow. You can understand what each applet does by hovering you mouse over the applet

  1. Once you have created a flow you can 'Save' and 'Close' it

Having created  a new flow, if you wish to test it out, please follow the steps documented here: http://support.exotel.in/solution/articles/57319-how-do-i-test-out-the-new-business-logic-that-i-ve-created-