Zbog ovog sastanka moja šefica danas dolazi rano.

Because zbog requires the genitive case in Serbian.

• Base form: ovaj sastanak = this meeting
• After zbog: ovog sastanka = because of this meeting

So both words change:

• ovaj → ovog
• sastanak → sastanka

A good rule to remember is:

• zbog + genitive = because of / due to

Examples:

• zbog kiše = because of the rain
• zbog posla = because of work
• zbog ovog sastanka = because of this meeting

Zbog means because of, due to, or on account of.

In this sentence, it introduces the reason:

• Zbog ovog sastanka = Because of this meeting

It is followed by a noun phrase in the genitive.

Compare:

• zbog tebe = because of you
• zbog škole = because of school
• zbog saobraćaja = because of traffic

Ovog is the genitive singular masculine/neuter form of ovaj (this).

Since sastanak is a masculine noun, and because zbog requires genitive, ovaj must become ovog.

So:

• nominative: ovaj sastanak = this meeting
• genitive: ovog sastanka = of this meeting / because of this meeting

This is agreement:

• the demonstrative adjective changes to match the noun in gender, number, and case.

Because sastanak is in the genitive singular here.

Its dictionary form is:

• sastanak = meeting

But after zbog, it changes:

• zbog sastanka = because of the meeting

So:

• sastanak = nominative singular
• sastanka = genitive singular

This is a very common pattern with masculine nouns.

Moja šefica is in the nominative case, because it is the subject of the sentence.

• moja = my
• šefica = female boss / woman boss

Together:

• moja šefica = my boss

She is the one doing the action (dolazi), so nominative is used.

Šefica is the feminine form of šef.

• šef = boss, male boss
• šefica = boss, female boss

Since the sentence says moja šefica, the speaker is referring to a woman.

Also notice the agreement:

• moja is feminine singular
• šefica is feminine singular

So they match correctly.

In Serbian, the present tense is often used for something that is scheduled, planned, or happening today / soon, especially with time words like danas.

So:

• moja šefica danas dolazi rano can mean
  my boss is coming early today

This is very natural in Serbian.

Also, dolazi is from the imperfective verb dolaziti, which is the normal choice for this kind of real, ongoing, or expected event.

This is mainly about aspect.

• dolaziti = imperfective
• doći = perfective

Here, Serbian normally uses the imperfective dolazi for a present-time or near-future situation like is coming today.

Why not dođe? Because the present tense of a perfective verb usually does not mean a normal present action. It often has future-like, conditional, habitual, or other special uses depending on context.

So in this sentence:

• dolazi = the natural choice

Rano means early.

So:

• dolazi rano = comes early / is coming early

Ranije means earlier, which is comparative.

Compare:

• Danas dolazi rano. = Today she is coming early.
• Danas dolazi ranije. = Today she is coming earlier.

So if the idea is simply early, use rano.
If the idea is earlier than usual / earlier than someone else / earlier than expected, use ranije.

No, Serbian word order is fairly flexible.

The sentence:

• Zbog ovog sastanka moja šefica danas dolazi rano.

is natural and emphasizes the reason first:

• Because of this meeting, my boss is coming early today.

Other possible word orders include:

• Moja šefica danas dolazi rano zbog ovog sastanka.
• Danas moja šefica dolazi rano zbog ovog sastanka.
• Moja šefica zbog ovog sastanka danas dolazi rano.

The basic meaning stays the same, but the emphasis changes a little depending on what comes first.

Danas means today, and its position is flexible.

In this sentence:

• Zbog ovog sastanka moja šefica danas dolazi rano.

it sits naturally before the verb phrase and tells us when the action happens.

You could also say:

• Moja šefica danas dolazi rano.
• Danas moja šefica dolazi rano.

All are possible. The chosen order just sounds natural and keeps the sentence easy to process:

1. reason
2. subject
3. time
4. verb
5. manner/time-related adverb

It can sometimes be omitted if the context already makes it clear whose boss you mean, but keeping moja is very normal and clear.

• moja šefica = my boss
• šefica = the boss / a female boss

If you say only šefica, it may sound less specific unless the context already identifies her.

So:

• Moja šefica danas dolazi rano. = clear and natural
• Šefica danas dolazi rano. = also possible if the listener knows which boss you mean

Yes.

You can say:

• Moja šefica danas dolazi rano zbog ovog sastanka.

This is also correct and very natural.

The difference is mostly emphasis:

• Zbog ovog sastanka ... puts the reason first, so it feels more like Because of this meeting...
• ... zbog ovog sastanka gives the reason later, after the main statement

Both are good Serbian.

A useful breakdown is:

• Zbog ovog sastanka = reason phrase
• moja šefica = subject
• danas = time expression
• dolazi = verb
• rano = adverb

So the sentence structure is roughly:

because of + noun phrase + subject + time + verb + adverb

That gives:

• Zbog ovog sastanka moja šefica danas dolazi rano.

A very literal gloss would be:

• Because of this meeting my boss today comes early.

Natural English:

• Because of this meeting, my boss is coming early today.