With one tap trading, your trades will open or close instantly with a single tap. You won't receive a confirmation screen before placing a trade if you have one-tap trading active.
In order to turn on/off one tap trading, please open the Capital.com app, go to Home > tap the Switch button at the top of the screen next to the account name > select the Live or Demo tab > tap the account you want to change the leverage for > Trade options > switch One tap trading on/off as you prefer.
Please note that it isn't possible to amend this setting on the web trading platform.