To create a staff contact group go to Admin > Comms, then click on the blue Staff button to the left side of this page. You can select individual staff members from the Staff Search dropdown box.
Once you have chosen all the staff and they are shown on the page with their details, click the green button that says Save Group.
Choose a name for the group and click save. If you have groups saved in Comms already, you will also get the option to add these staff to an existing group.
You will need to refresh your page in order to see this group under Saved Groups in Comms. Clicking Home/Dashboard is one easy way to do this.
You can create student groups in a similar way, by selecting students via the Student Search dropdown list.