Question:
What is the expectations of time-outs with the combinations of Enable Password Caching on XenMobile Server?

Answer:
Enable Password Cache: false

• Secure PIN authentication on XenMobile Apps after INACTIVITY_TIMER expires.
• Active Directory password authentication on Secure Hub when session times out on NetScaler Gateway.

Enable Password Cache: true

• Secure PIN authentication on XenMobile Apps after INACTIVITY_TIMER expires.
• Secure PIN authentication on Secure Hub when SESSION times out on NetScaler Gateway. You will be prompted for Active Directory password only if it is changed on Active Directory.

Functionality of ENABLE_PASSWORD_CACHING (Need to set from XenMobile Client Properties)

This key lets you allow the users' Active Directory password to be cached locally on the mobile device. When you set this key to true, users are prompted to set a Citrix PIN or passcode. The ENABLE_PASSCODE_AUTH key must be set to true when you set this key to true.

Default value: false

Question:
Is there any particular order for Timeout values

Answer:
There is certain order in which all of the timeouts should be mentioned. Below is the article which have the timeout information.
https://support.citrix.com/article/CTX224958

You can increase the timeout values however ensure that they follow the order mentioned above. Please refer the below article for more information : https://support.citrix.com/article/CTX224958