You can find the menu item currencies by clicking on settings > shop in the left menu of your administration.
In this tab you find all relevant information and data, which concern your currencies for your sales channels.
Here you have the possibility to manage them, add new currencies or remove existing ones.
The overview shows you all already configured currencies of your system, including all relevant information.
Via the context menu (1) you can edit (2) or remove (3) these currencies.
The factor is defined by the top system currency. The configuration of this currency should always remain unchanged.
By clicking on the button add currency within the currency overview, the mask opens to create a new currency.
You can define a name (1), a short name (2), a symbol (3), a factor (4), which is derived from the main factor, and the decimal places (5) for the corresponding currency.
The factor is defined using the system standard currency.
When assigned, the system converts the stored values of the system standard currency using the factor and thus displays the adjusted prices with the assigned currency in the frontend.
By pressing the save button, you create this currency with the given configuration.
Currencies that you create must always be maintained in the system standard language, which is why the language selection is grayed out here.
The edit mode, which you can open by clicking on the context menu in the currency overview, allows you to edit existing currencies.
By changing the language (1) you can enter translations for your currencies, which will then be displayed to your customers in the frontend, at places where this name is used.
You can only remove a currency if it is no longer used anywhere.
Therefore, make sure that you have not assigned it to any of your sales channels etc. anymore.
If you try to do this, the system will give you a hint where it is still being used.