In short, YES! Events can be posted anywhere.
Events, like any other post type, can be included wherever you want on the page of your choice in WordPress.
Situation: You are organising a Team Building activity for Company A, which will have 3 different projects and would like to offer them the possibility to register online via the Events Manager. However, you do not want everyone to see the said projects.
One possible way:
First, create a Password Protected page on which you will add the Event Calendar shortcode (pretty much the same as the default Volunteer page).
In the settings of the Event Calendar shortcode, select the category of the “private events” (in our case, Category A).
Save and publish it, and send the link to the page to the company.
Note: If you are not using Event Categories, to do this method, you would need to first create Event Categories, but as well to modify the Volunteer page so that it only shows the “public” event category/ies.
Alternate method:
In some cases, you might find easier to simply create a form with a dropdown field to select the project, and include this form in a password protected page.