isLocalUserId 

Namespace: SynicSugar.MatchMake
Class: MatchMakeManager

public bool isLocalUserId(UserId id)
public bool isLocalUserId(string id)

Description 

Whether the argument is the id of local user or not.

using UnityEngine;
using UnityEngine.UI;
using SynicSugar.MatchMake;
using SynicSugar.P2P;
using Cysharp.Threading.Tasks;

public class MatchMakeSample : MonoBehaviour {
    public Button Kick;
    public void SetData(UserId id){
        if(MatchMakeManager.Instance.isHost && !MatchMakeManager.Instance.isLocalUserId(id)){
            Kick.gameObject.SetActive(true);
            Kick.onClick.AddListener(() => MatchMakeManager.Instance.KickTargetFromLobby(id).Forget());
        }
    }
}