Is possible to specify a different currency symbol for each cell when editing a Calc file in LibreOffice Online ?

The question is related to the Online version of the LibreOffice.

I know that i can change the format of a cell to “currency” format by pressing the “Format as Currency” button from the toolbar. The currency symbol that is used is defined through “lang” parameter passed in the URL that defines the file location. However, the currency symbol remains the same through the entire edit session.

Q1: Is there a way to change the currency symbol while editing the file ? I know that in the desktop version you can do this.
Q2: If there is a way then can you explain or give me a hint on how to achieve this ?
Q3: If not, do you have in plan to implement such a feature in the future ?