Dynamics 365 Customer Service introduces enhancements in Queue that helps to organize, prioritize, and monitor the progress of your work. Queues are the containers used to store anything that needs to be completed or requires an action. By default, a queue is created for each user and team, also use this default queue to track all your work items, set up queues to reflect your organization's structure, business processes.
Go to Service Management > Queues > New. You can provide the input fields of Name (E.g. Group Calendar), Type (E.g. Private), Incoming Email (E.g. Powerportals@swighub.onmicrosoft.com). Click on Save.