To create email groups, follow the steps below:
Log into the admin portal.
On the left-hand pane, under Recipients, click Groups.
From the subheadings under the main title, click the type of group you'd like to create from the following:
Microsoft 365, Distribution list, Mail-enabled security, Dynamic distribution list.
Click Add a group, select the Group Type and then click Next.
For Basics, type in the name of the group and then click Next.
Note: Alternatively, can leave the description blank.For the Owners page, assign yourself and then click Next.
On the Members page, add all the required and then click Next.
On the Settings page, to assign the email address for the group, type in an email address and then click Next.
On the Finish page, review your configuration settings and then click Create group.
Note: It may take up to one hour to appear within your email address book.