Ability to add and remove symbols from the watchlist programmatically or with hotkeys

We need an ability to use hotkeys to add/remove symbols from cTrader's watchlists. I'm personally implementing such solution programmatically, but can't use the Watchlists class provided by the API, because there is no ability to add or remove symbols programmatically. Yet I would prefer using the watchlist provided by the API, to have access to the list also from mobile apps.

Also, commonly used chart objects like trendline, need hotkeys.