ToggleLocalUserSending 

Namespace: SynicSugar.RTC

public void ToggleLocalUserSending(bool isEnable)

Description 

Switch Input setting of Local user sending on this Session.
This is Low API. We should StartVoiceSending() and StopVoiceSending() instead of this.

using SynicSugar.RTC;
using UnityEngine;

public class VCSample : MonoBehaviour {
    public void Start(){
        RTCManager.Instance.ToggleLocalUserSending(true);
    }
}