Questions about using Verb+ (으)라고 + 해요 form for Quoted Imperative
I am trying to understand this grammar structure. I believe it means to tell someone that someone has told them to do something.
ie. 조용히 하라고 해 주세요. Please tell them/him/her to be quite.
My first question is about the subject particles. If I wanted to say that my Dad told me to tell my sisters that my Mom is coming home, how would the subject particles be used?
아뻐지(?) 여동생들한테 엄마(?) 집으로 오라고 해요.
(?) denotes what particle should be used
My second question is how do I show tenses with this format?
For example, if I wanted to say please tell the teacher that I am going to be late.
Could I say, 선생님한테 나 늦을으라고 해요. The tense is expressed in the first verb
or 선생님한테 나 늦으라고 할거에요. The tense is expressed in the second verb.