המזכירה אומרת שזה דחוף, ולכן כדאי לקבוע שעה מיד.

ה־ is the Hebrew definite article, so it means the.

So:

• מזכירה = secretary (feminine)
• המזכירה = the secretary

The ending ־ה often marks a feminine noun, and here it does. The masculine form would usually be מזכיר.

Because the subject, המזכירה, is feminine singular.

In the present tense, Hebrew verbs agree with the subject in gender and number:

• masculine singular: אומר
• feminine singular: אומרת
• masculine plural: אומרים
• feminine plural: אומרות

So המזכירה אומרת means the secretary says.

שזה is made of two parts:

• ש־ = that
• זה = this / it

Together, שזה means that it is or that this is, depending on context.

In this sentence, it is best understood as that it’s:

• המזכירה אומרת שזה דחוף = The secretary says that it’s urgent

In present-tense Hebrew, the verb to be is usually omitted.

So Hebrew says:

• זה דחוף = literally it urgent
• natural English: it is urgent

This is completely normal in Hebrew.
If the sentence were in the past or future, Hebrew would usually use a form of היה:

• זה היה דחוף = it was urgent
• זה יהיה דחוף = it will be urgent

דחוף means urgent or pressing.

It is an adjective. Its forms are:

• masculine singular: דחוף
• feminine singular: דחופה
• masculine plural: דחופים
• feminine plural: דחופות

Here it appears as דחוף because the expression זה דחוף normally uses the masculine singular form.

ולכן is:

• ו־ = and
• לכן = therefore / so

Together, ולכן means and therefore, so, or and so.

It connects the first part of the sentence to the conclusion:

• The secretary says it’s urgent
• therefore / so it is advisable to set a time immediately

It sounds a bit more formal and structured than a simple conversational אז.

כדאי means something like:

• it is advisable
• it is a good idea
• it is worth it

A very common pattern is:

• כדאי + infinitive

So:

• כדאי לקבוע = it’s advisable to set / schedule

Important point: כדאי is usually used impersonally. It does not change for gender or number here.

You can also add a person:

• כדאי לי = it’s worthwhile for me / I should
• כדאי לך = you should
• כדאי לנו = we should

But in your sentence, no person is stated, so it stays general.

לקבוע is the infinitive form, meaning to set, to determine, or to schedule.

The ל־ at the beginning is the normal infinitive marker in Hebrew, often similar to English to.

So:

• לקבוע = to set / to schedule

After כדאי, Hebrew normally uses the infinitive:

• כדאי לקבוע = it is advisable to schedule

Literally, yes: שעה means hour.

But in context, it can also mean a time or a set time. So לקבוע שעה often means:

• to set a time
• to arrange a time

It does not necessarily focus on the length of one hour. It is more about fixing a specific time.

Depending on context, Hebrew might also use:

• לקבוע פגישה = to set a meeting
• לקבוע תור = to make an appointment

Because כדאי makes the statement impersonal.

Hebrew often leaves the person understood from context. English often prefers to make this explicit with words like we, you, or they, but Hebrew does not always need that.

So ולכן כדאי לקבוע שעה מיד is like saying:

• so it’s advisable to set a time immediately
• so we should set a time immediately
• so you should set a time immediately

The exact person depends on context.

מיד means immediately or right away.

In your sentence:

• כדאי לקבוע שעה מיד = it’s advisable to set a time immediately

Putting מיד at the end is very natural. Hebrew word order is somewhat flexible, so you may also see it in other positions, but the original version sounds neutral and standard.

For example:

• כדאי מיד לקבוע שעה — possible, but less neutral
• מיד כדאי לקבוע שעה — also possible, with a different emphasis

The original sentence places the urgency neatly at the end.