When you go to Options -> Settings on your client and choose the "Use Database Settings" from the General Tab, can those settings to be applicable for all global users?
Release : 9.3
Component :CA Automic Applications Manager
When you go to Options -> Settings on your client, Applications Manager
Attached KB explains how to check database and AM timezones and match: https://knowledge.broadcom.com/external/article?articleId=89867
This is also covered in our documentation at the link below: