iOS - How to create separate UIButton for UITableView header title section in iPhone

- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section{
    if (section == 0) {
        return @"Events you created";
    }
    else{
        return @"Events you participated in";
    }
}

- (UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section {
    
    UIView *containerView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 320, 40)];
    containerView.backgroundColor = [UIColor groupTableViewBackgroundColor];
    CGRect labelFrame = CGRectMake(20, 2, 320, 30);
    if(section == 0) {
        labelFrame.origin.y = 13;
    }
    UILabel *label = [[UILabel alloc] initWithFrame:labelFrame];
    label.backgroundColor = [UIColor clearColor];
    label.font = [UIFont boldSystemFontOfSize:17];
    label.shadowColor = [UIColor colorWithWhite:1.0 alpha:1];
    label.shadowOffset = CGSizeMake(0, 1);
    label.textColor = [UIColor colorWithRed:0.265 green:0.294 blue:0.367 alpha:1.000];
    label.text = [self tableView:tableView titleForHeaderInSection:section];
    [containerView addSubview:label];
    
    if(section == 0) {
        if (displayObject.count > 0) {
            Homebtn = [[UIButton alloc]init];
            if (!ShowingListHome) {
                [Homebtn setImage:[UIImage imageNamed:@"arrow_down"] forState:UIControlStateNormal];
            }else{
                [Homebtn setImage:[UIImage imageNamed:@"arrow_up"] forState:UIControlStateNormal];
            }
            Homebtn.frame = CGRectMake(270,0 , 40, 40);
            [Homebtn addTarget: self action: @selector(showNewInv:)
              forControlEvents: UIControlEventTouchUpInside];
            [containerView addSubview:Homebtn];
        }
    }
    if(section == 1) {
        if (displayObject1.count > 0) {
            InvBtn =[[UIButton alloc]init];
            if (!ShowingListAccept) {
                [InvBtn setImage:[UIImage imageNamed:@"arrow_down"] forState:UIControlStateNormal];
            }else{
                [InvBtn setImage:[UIImage imageNamed:@"arrow_up"] forState:UIControlStateNormal];
            }
            InvBtn.frame = CGRectMake(270,0 , 40, 40);
            [InvBtn addTarget: self action: @selector(showAcceptInv:)
              forControlEvents: UIControlEventTouchUpInside];
            [containerView addSubview:InvBtn];
        }
    }
    return containerView;
}