When you create a group, you create a central email address and place to collaborate. You can use this to provide an email address like sales or info that everyone can see or get info from. This Microsoft 365 Business Premium tutorial will show you how to create a group email address.
For more tips like this, check out the working remotely playlist at www.youtube.com/FoetronAcademy . Also, if you need any further assistance then you can raise a support ticket and get it addressed.