Khutbah on Friday

As-Salaam-Alaikum Brother,

I have a question about who is allow to stand on the minbar (pulpit) while giving Khutbah. I was told that a hafiz can stand on the first step and give the khuba, a mufti or alim can stand on the second step and give the khutbah, and the third step was for the Prophet Muhammad’s ( Peace Be Upon Him). I was also told that a person who is not a hafiz, alim, or mufti, can’t stand on the minbar and give the khutbah. Is this true ? Can you tell me if my understanding is right or wrong ?