Send funds feature is accessible from the Coin/Token page of the wallet. After you hit Send you see a screen where you have to specify the amount you’d like to send and the recipient.
Setting amount is straightforward. The recipient can be set entering a valid wallet address or scanning a QR code with recipient details encoded. Once you’re ready, you hit Send and then need to confirm the transaction with your password or face ID/fingerprint in case your device supports it and you’ve set this feature in Settings.
Signing transaction with a private key and sending it to blockchain is done behind the scenes. After you’ve confirmed, you should see a notification that you’ve successfully sent funds.