How can we add currency in Manage Daily Rates screen for From Currency and To Currency list ?

Summary

How can we add currency in Manage Daily Rates screen for From Currency and To Currency list ?

Content

Hello,

 We update the daily conversion rates .
 One of the currencies , that exists in the system , can not be found under the 'From Currency' , 'To Currency' lists -in the
 daily conversion rates screen. - see attached file.

 I checked the setup of the 'Manage Currencies' and i do find the 'ZAR' currency, and its setup looks similar to 'USD' for example (that if can find under daily rates)
 see attached files.

 How can i add this currency to the 'Manage Daily Rates' From Currency' , 'To Currency' lists.