I have a list box for multiple selection. It contains some main list and sublist. My aim is no one couldn't select the main list. for eg:

Project manager
Arun
Pradeesh
Team Leader
Madhu
Jibin

Anybody couldn't select the main heading such as Project manager and Team Leader.. Pls help me to solve this problem.

thank you nav33n. Thank you very much for your response.

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