Some nuances of business etiquette may have changed over the past few decades. But it’s still very important to cover, and especially with your organization’s future leaders. Here are a few things you’ll want to make sure your business etiquette training materials cover, especially for those employees who are essentially becoming the face of your organization. 
Punctuality
Your managers and leaders should always be on time to in-person and virtual meetings, whether they’re hosting or directly involved in them or not. Showing up to any meeting late is extremely rude and can fracture communications and rapport and will set a bad precedent for all other employees.
Punctuality is also important when responding to e-mails, messages, and phone calls. While all communications don’t necessarily need to be responded to immediately, it is rude to let multiple business days lapse before responding to any communication in the workplace, regardless of whom it is from.
Integrity
Leaders should avoid passive aggressive and dishonest behavior in the workplace at all costs. Customers, coworkers, employees, and clients don’t generally enjoy working with people they can’t trust or people who pretend to be someone they aren’t naturally in everyday life away from work.
Preparedness
If leaders expect their employees to be prepared at meetings and during presentations, they should be too. Leaders should be especially prepared when they are interacting with clients and handling customer requests, as well.
Humility
While leaders should be confident and take charge when necessary, it is very poor business etiquette for them to gloat or become pompous about their achievements. And they should be encouraged to ask for help from others when it’s necessary, and projects require a team effort.
Proper Greetings and Introductions
Leaders should know how to introduce themselves properly and respectfully to new employees and clients of any background, especially in global settings where different customs need to be recognized.
Proper Technology Use
In today’s ever-connected digital world, it can and still should be viewed as rude when technology is used improperly. For instance, leaders should not be distracted by their laptops or smartphones in important business meetings. And they should never be looking at a screen when someone is addressing them.
How to Write a Business E-Mail and Communications
Business leaders should know how to write a formal business e-mail and how to address different recipients professionally. And they should know how to properly format such correspondence.
Dining Etiquette
A lot of managers and executives will find themselves in situations where they will have to eat a meal with a client, a stakeholder, or other leaders in their industry. Make sure they know how to properly pass items around a table, proper toasting customs, how to properly fold and use a cloth napkin, etc.
Overall, make sure your organization’s leaders know how to respect others’ time and responsibilities as you’re developing your business etiquette training materials.