class Job_title(models.Model):
    job = models.CharField(verbose_name='职称管理', max_length=50)

    class Meta:
        verbose_name = '职称管理'
        verbose_name_plural = '职称管理'

    def __str__(self):
        return self.job


class Employees(models.Model):
    name = models.CharField(verbose_name='姓名', max_length=50)
    sex = models.CharField(verbose_name='性别', max_length=50)
    files_id = models.CharField(verbose_name='档案编号', max_length=50)
    id_number = models.CharField(verbose_name='身份证号', max_length=50)
    native_place = models.CharField(verbose_name='籍贯', max_length=50)
    nation = models.CharField(verbose_name='民族', max_length=50)
    birthdate = models.DateField(verbose_name='出生日期')
    work_date = models.DateField(verbose_name='参加工作时间')
    join_date = models.DateField(verbose_name='进入医院时间')
    o_education = models.CharField(verbose_name='最初学历', max_length=50)
    n_education = models.CharField(verbose_name='最高学历', max_length=50)

    job_title = models.ForeignKey(Job_title, verbose_name='现凭职称', on_delete=models.CASCADE, blank=True, null=True)
    employ_date = models.DateField(verbose_name='凭现职称时间')

    u_job_title=models.ForeignKey(Job_title, verbose_name='未凭职称', on_delete=models.CASCADE, blank=True, null=True)
    # get_date = models.DateField(verbose_name='取得未凭时间', blank=True, null=True)


怎样才能两列同时关联一张表？麻烦哪位老师帮忙指点