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Ok I did that but I do not see how I able to do this part . I went to admincp --> Usergroups--> Usergroup Manager--> Administrators , Moderators & Super Moderators--> Edit Usergroup (id=5,6,7) and only saw these options

Usergroup: Administrators (id: 6)
Usergroup Options
General Permissions
Forum Viewing Permissions
Post / Thread Permissions
Attachment Permissions
Poll Permissions
Picture Uploading Permissions
Private Message Permissions
Calendar Permissions
Who's Online Permissions
User Reputation Permissions
User Note Permissions
Administrator Permissions

But I did not see the Can create ticket or anything like it

Usergroup Settings

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Usergroup settings. OK this is one of the most important sections. This is where you're going to limit the usergroup's settings based on their ability to do actions in the helpdesk. It's fairly simple to understand but here is what I would recommend setting for a few of the usergroups:

Any usergroup that you just want the ability to create tickets and not manage anything. This would be usergroups such as Registered Members. I would set the settings to something like this:

Registered Users:
Can Create Tickets - Yes
Can Edit Tickets - Yes
Can Delete Tickets - Yes
Can Resolve Tickets - Yes
Can Unresolve Tickets - Yes
Can Claim Ownership of Tickets - No
Can Unclaim Ownership of Tickets - No
Can Edit Any Ticket - No
Can Delete Any Ticket - No
Can Resolve Any Ticket - No