Creating a New Logon Group 
You can create a new logon group in one of the following ways:
Create a new logon group with no settings;
You then configure the cluster instances and the applications that are part of this group from scratch.
Create a new logon group by copying an existing one;
You then modify the settings of the original group. This is a useful method, for example, in case you need your new group to include the same cluster instances but a different application must be accessible within it.
Procedure
Creating a New Logon Group
On the Logon Groups tab page, choose Create.
Create Dialog screen appears. Enter the name of your logon group in New Logon Group Name.
From the System Name dropdown list box, choose the system this logon group is created in.
Choose OK.
Copying an Existing Logon Group
On the Logon Groups tab page, select a logon group from the list that you want to copy.
To create the logon group with the same settings, choose Copy.
Create Dialog screen appears. Enter the name of your logon group in New Logon Group Name.
Choose OK.