Creating Users and Groups
From the UI, select "Users" from the Global Menu. This opens a dialog to create and manage users and groups.
Click the Add icon (). To create a user, enter the 'Identity' information relevant to the authentication method chosen to secure your NiFi instance. Click OK.
To create a group, select the "Group" radio button, enter the name of the group and select the users to be included in the group. Click OK.