Step 1: Go to uknowva configuration.
Step 2: In left side menu click on Plugin manager
Step 3: Search for "Virtual Bio-metric - Attendance Tracker" plugin and click on it.
Step 4: This is the configuration page for the Virtual Bio-metric - Attendance Tracker.
Go to field -> "Users that need not require approval" - The selected users attendance shall directly be pushed to their attendance calendar without asking for any approval.