How to select all the items in drop down

PFA

I wan to select all the items in the second drop dropdown and click update button?
Thanks in advance

Hi @rsr.chandu

Have a look on the Video and thread

https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=&cad=rja&uact=8&ved=2ahUKEwilh4ueqNL5AhVh6jgGHQW3DiQQFnoECA8QAw&url=https%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3DONT_Q5V9hVY&usg=AOvVaw1xl8cRY4IP6VmqEqRfrKWC

Regards
Gokul