Clicking the Create security button opens the Editing window. To create a security, you should fill the security properties and click OK button:
Securities from different sources have unified identifiers. This is done so that the trading robot code does not depend on the connection type (Connectors). The following syntax is used for the security identifier - [security code]@[board code]. For example, for Apple shares NASDAQ stock-exchange the identifier will be AAPL@NASDAQ.