When setting up FieldFX, refer to these pages:
The FX Settings are global settings that control how select FieldFX features work.
Set security policies for login passwords, enable admins to log in as users, and set up trusted networks.
You can change your login password, security question, time zone, language, currency, and change the tabs in Salesforce classic and in the Salesforce Lightning Experience.
Sharing settings control record access. You can use organization-wide sharing defaults to lock down record access to the most restrictive level. Also you can use the role hierarchy, sharing rules, and manual sharing to expand record access.