

To delete drill, follow the steps below.
Navigate to Drill Library
From the UDBapp home screen, tap
Settings
Locate and tap
Drill Library
Delete single drill file
Swipe from right to left and tap
OR
Tap the
options menu
Tap
Delete from Subject
Delete multiple drill files
In the Drill Library, tap Edit in the top right corner
Select the drill files you wish to delete
Tap Delete Selected in the bottom right corner



Settings
Drill Library
options menu