kaigi no saisyo ni, watasi kara saki ni setumeisasete itadakimasu.

の links 会議 and 最初 and means something like of.

So:

• 会議 = meeting
• 最初 = beginning / first part
• 会議の最初 = the beginning of the meeting

It works the same way as many other noun combinations in Japanese:

• 本の名前 = the name of the book
• 会社の人 = a person from the company
• 夏の終わり = the end of summer

So 会議の最初に means at the beginning of the meeting.

Here, に marks a specific time or point in time.

So 最初に means at the beginning or first in a time sense.

Compare:

• 会議の最初に話します = I will speak at the beginning of the meeting.
• 三時に行きます = I will go at 3 o’clock.

In this sentence, 会議の最初に sets the time frame for the action.

In this sentence, 最初 means the beginning or the first stage/part of something.

So 会議の最初 is not just the first thing in the universe of all possible things. It specifically means the opening part of the meeting.

A useful way to think about it:

• 最初に here answers when?
• 先に later in the sentence answers in what order compared with others?

That is why both can appear in the same sentence.

They are similar, but they are doing different jobs here.

• 会議の最初に = at the beginning of the meeting
  This is about time/stage.
• 私から先に = I will go first / starting with me
  This is about order among people or actions.

So the sentence is saying something like:

• At the beginning of the meeting, I will explain first.

It may feel a little repetitive in English, but in Japanese it is natural because each expression contributes a different nuance.

Here, から marks the starting point of an order or sequence.

So 私から means:

• from me
• starting with me
• I’ll go first

It does not mean physical movement here. It means that among the people who may speak, the explanation will begin with the speaker.

For example:

• 私から話します = I’ll speak first / Let me start.
• 先生からお願いします = Let’s start with the teacher.

So in this sentence, 私から signals that the speaker is the first person to give an explanation.

Because the point is not just who is doing the action. The point is also where the sequence starts.

• 私が説明します focuses on I as the subject: I will explain.
• 私から説明します adds the nuance we’ll begin with me or I’ll go first.

So から is useful when several people may speak and the speaker wants to indicate the order.

If you used 私が先に説明します, that would also be possible, but it feels slightly different:

• 私が = emphasis on the subject
• 私から = emphasis on starting with that person

先に means ahead, before that, or first in an order sense.

With 私から, it strengthens the idea that the speaker will go before others.

So:

• 私から説明します = I’ll start / I’ll explain first
• 私から先に説明します = I’ll go first and explain before the others

In many contexts, 私から already suggests this, so 先に is partly reinforcing the order. It helps make the intention clearer.

It is built from several parts:

• 説明する = to explain
• 説明させる = to make/let someone explain
• 説明させて = te-form of the causative
• いただきます = humble form of もらいます, literally receive

As a set expression, 〜させていただきます is a very common polite business phrase. It often means:

• allow me to ...
• I will humbly do ...
• please let me ...

So 説明させていただきます means something like:

• I will explain
• Allow me to explain
• Please let me give an explanation

It is much more polite and deferential than plain 説明します.

Not always.

Grammatically, 〜させていただく comes from the idea of receiving permission/favor to do something. But in real Japanese, especially in formal and business settings, it is often just a polite formula.

So depending on context, it may mean:

• genuine please allow me to explain
• or simply a very polite I will explain now

Native speakers often use it even when no explicit permission is being asked. It can sound humble and professional.

That said, it is sometimes overused in modern business Japanese, so learners should know that it is polite, but not always necessary.

You can say 説明します, and it is perfectly grammatical. It is simply less formal and less humble.

Compare:

• 説明します = I will explain
• ご説明します = I will explain respectfully/humbly
• ご説明いたします = more formal humble form
• 説明させていただきます = very polite, often with a nuance of allow me to explain

In a meeting, especially in business, 説明させていただきます sounds very formal and deferential. It shows politeness toward the listeners.

So the choice is about tone, not basic meaning.

In many business situations, yes, ご説明いたします can sound more straightforward and natural.

Compare the nuance:

• ご説明いたします = a clean, formal, humble I will explain
• 説明させていただきます = a more indirect and extra-polite allow me to explain

The sentence you were given is natural enough, especially if the speaker wants to sound very polite. But in some contexts, Japanese speakers may prefer a simpler version such as:

• 会議の最初に、私から先にご説明いたします。

So the original sentence is not wrong; it is just very polite.

Yes. Japanese often omits subjects and topics when they are clear from context.

For example, in a meeting, the speaker could naturally say:

• 会議の最初に、先に説明させていただきます。
• 会議の最初に、私からご説明いたします。

If everyone already knows who is speaking, 私 may be unnecessary.

It is included here to make the order especially clear: I will be the one to go first.

Yes, but Japanese word order is somewhat flexible as long as the particles are clear.

This version emphasizes:

1. the meeting’s beginning: 会議の最初に
2. the speaker as the starting person: 私から
3. the order: 先に
4. the polite action: 説明させていただきます

Other versions are possible, such as:

• 会議の最初に、先に私から説明させていただきます。
• 会議の最初に、まず私からご説明いたします。

They are all similar, but the original order sounds natural and easy to follow.

Yes, often it can.

• 最初に and 初めに can both mean at the beginning or first.

In many contexts, they are very close. However:

• 最初 often feels a bit more like the first one / the earliest point
• 初め often feels more like the beginning/start

In this sentence, either would work naturally:

• 会議の最初に
• 会議の初めに

The difference is small here.

The sentence sounds formal, polite, and meeting-like.

It suggests all of the following:

• the speaker is arranging the flow of the meeting
• the speaker will speak before others
• the speaker is being humble toward the listeners
• the setting is probably professional or formal

So it is not just I’ll explain first. It has the softer, more deferential feeling of:

• At the beginning of the meeting, if I may, I will go first and give the explanation.