You can change the system timezone by going to Settings > System Preferences > Platform Settings > Default Timezone.
This is a very useful setting when it comes to looking at conversion and stat reports to check when clicks and conversions came in. The Data Audit Logs also use these values to determine when a setting is changed.
You can change the default currency by going to Settings > System Preferences > Currencies and Rates > You can click on “Make Default” button to make the relevant currency the default currency. Also OffersHub even supports adding currency types as well as cryptocurrencies.