How to add new currencies?

Although we do not plan to use online payment now, in the registration creation form,
we can select only CHF, EUR and USD in Price options - Currency in indico 2.0.1.
While in the help document:
They can select CHF, CZK, EUR, GBP, HUF, JPY, SEK, THB and USD.
How can we expand currency selection in the registration creation form ?

You can add currencies as an administrator (/admin/payment/)

Thanks. I could not find it…