How can I config the setting of session expire time? (AAD Authentication)

Version: K2 5.3

Authentication: Integrated Azure AD login.

In our company, all of users use AAD account to login K2 BPM.

But whatever you are operating or idle, system will auto log you out after an hour.

I know the session expired setting of Windows and Forms authentication but can't find anything about AAD authentication.

https://community.nintex.com/t5/Technical-Issues/Session-Timeout-Settings-for-K2-smartforms/ta-p/123045

I also checked the issue with Microsoft consultant about AAD 'Conditional Access Policies', we have confirmed is not related this.

Anyone can help?

Thanks.