It's a convenient tool to set and see your company's schedules, duties, time periods, vacations, holidays and other time-related activities.
Calendar in doBoard operates with roles and locations. Please, create them on the page People.
This guide may help you with that: https://help.doboard.com/teams-and-roles
Open the page Calendar in the Main Menu.
Select what mode you want to see at the top of the page: Tasks or Shifts.

In this mode you can see what ongoing tasks are planned on each day of the month or week. Use the interface elements to change the view as you like:

Similarly, this mode offers a few selectors to modify the view of the calendar:

1. Click on any cell even if it already has something or click on any participant in the list to the left
Reminder: You can create and edit only your own shifts unless you are a Project Admin.
2. A popup window will appear where you can select the necessary parameters of the shift

3. Click the button Save and see the results
4. If you want to edit an exisiting shift, click on it and then click on the pencil icon

Learn more about doBoard: