Can I install Gainsight in Salesforce Developer Edition? If Yes, how to get the package password?

Hi Guys,

I am new to Gainsight and i am exploring as of now. Hence, i am trying to install Gainsight in salesforce developer edition. But, as per below documentation, i need app password. so from where i can get it? Any help would be appreciated?

https://support.gainsight.com/View_More_Categories/Training_and_Videos/Implementation_and_Onboarding/Onboarding_Step_1_Install_Gainsight_and_Configure