Below the Functions Module menu as it appears on the Settings window:
Important note: When changing the settings of the Function Module, you need to press Ctrl+Alt+F9 to recalculate the result of the Function Module.
Currency: is set by default to the Reference currency a.k.a the reporting currency, which is the currency used by the company when reporting its financial statements.
Scale factor: Set by default to thousands, check the detailed description here.
Rounding Decimals: Set by default to 4 decimal places, check the detailed description here.
Clicking the Reset button empty the local cache memory which force the data download from the Infront Analytics server to the Excel Add-in Function Module.
The below Windows notification appears once the reset is done: