Public speaking ...
It should not surprise you that some people find it extremely difficult to talk in front of other people. This can be a real problem, especially if you're a manager in charge of a larger number of employees.
You might be required to give general briefs from time to time. You need to ensure that you're feeling confident ahead of this task.
If you have problems with public speaking, it would be in your best interest to resolve them ASAP. You are the manager, after all.
Some measures that I recommend for you to take:
Be Familiar With The Subject
This is undoubtedly the first thing to do. Let's face it; you can't correctly explain the relationship between Luke Skywalker and Darth Vader if you have zero knowledge about the subject.
The same thing applies to giving a speech. You need to ensure that you're very knowledgeable about the topic at hand. You must be able to answer any question that comes your way.
Do Adequate Research
You need to do this even if it turns out that you do know something about the subject. A little bit of brushing up will certainly not hurt, and the research should be subject-specific.
If you have to speak about a new product, make sure you've researched everything involved. You wouldn't want to stutter on the big stage.
Do Your Research On The Audience
Your goal should be to have everyone's gaze and attention on you when you're speaking. It will boost your morale and self-confidence. However, before it can be achieved, you need to ensure that you are familiar with the audience.
Find out beforehand their interest, areas of your presentation that would most likely catch their attention, and the level of their technical know-how. I can't fail to mention that there are a few exceptions to the rule. For example, when talking to a vast and diverse audience or you do not know.
Research as much as you can about them and structure your speech to suit them.
Make It Written
Depending on the speech, you may need to write the whole thing down or scribble some parts of it down. After doing either of these, you should then proceed to review what you've written down.
Ensure it makes sense structurally and logically. Make adjustments if need be.
Engage In Rehearsals
You should read out the speech to your hearing and listen to how it sounds. Depending on the situation, you can enlist the help of people close to you.
It would help if you were vocal because words always express right in our heads. However, we begin to notice minor errors when we read them aloud.
Try To Be Relaxed Before The Real Deal
You've been working hard at this. You've meticulously followed every step recommended. At this point, you can afford to experience some calm - no need to be tensed.
You've adequately prepared for this. All you need is to actualize everything you've been practising. You've got this!