To add symbols to MetaTrader:

1- First, go to the Market Watch section in MetaTrader and click on the Symbols option.

2- Then, right-click on one of the symbols, and in the opened menu, click on the Symbols option.

1- Now, you can search for the desired symbol name in this section.

2- Alternatively, you can find the desired symbol by browsing through the predefined categories in this section.