How the parallel currency Works?

Hi Folks,

I need to get some idea on functionalities relating to parallel currencies.  Good practice on 3rd currency and currency revaluation and fixed assets,

1. Inventory
2. GRNI
3. Fixed Asset Depreciation calculation
4. Loan Account (Currency revaluation)

Can you please add your knowledge points on the above topics with regard to parallel currency?

@Thanushi Jayaweera @Sachin Vithanage @Shehan Almeida @MadushaDissanayake @Rangi Wijewardana 

Best regards,

Thakshila