In order to use them on Account records, you first need to configure the Groups.
After reading this article, you will know how to configure Group for your own use.
Let's get you started
You first need to go to
Admin >> Accounts
, where you can find the Account Groups section. 
Adding a new Group
Click on
Add
to create a new Group.You can then choose the name.
Updating an existing Group
Click the name of an existing Group from this list if you want to change the name.
Changes will automatically apply to the already existing Accounts with this Group.