Adding tikers to MT5 ?

 
Why this ETF ($UVXY) is not available at the platform?
 
The charts, the price on the charts, the symbols to trade, and the names of the symbols, and the time of the price on the chart - all of them are related to the brokers only.

So, if you want to trade some symbol so you should find the broker which is allowing this symbol for traders (because it is nothing to do with Metatrader platform application at all).