  
(1)  Animator Interactive: This is the mode you use when you just want to use the picker.  
(2)  Simple Edit Interactive: Some basic picker editing features are available in this mode. 
(3)  Namespace Field: This field shows the namespace of the current picker, directly edit the text to edit the namespace. 
(4)  Fetch Namespace Button: Click to grab the namespace of Maya selection and use that as the picker namespace. 
(5)  Open Button: All the open features are available in this button, LMB click and choose one way to load the picker in its context menu. 
(6)  Search & Load: Click to search and load related picker file/node. It grabs the namespace of the selected Maya node and finds and loads the corresponding picker node/file.  
(7)  More Features Button: The button serves as a "more features" button. LMB clicks it to visit more features. 
(8)  Picker Tabs: The Tabs support drag & drop action between layout areas to reorder the tabs. Middle click to close it. 
(9)  Layout Switcher: Click on this button to switch to single/multiple picker views. 
  
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