Good Afternoon, many thanks for leaving us a comment. I would suggest in your mother's case that you turn the SECURE setting off. This would mean that it would not rotate half a section between doses and the shutter would not be locked, but the next dose would not be visible at all, until the next alarm time at which point the tray would rotate to present that full compartment. I hope this would help you.
If you would like to discuss the settings do call us 01799 550979 and we can talk you through them.
With kind regards
Linda
Pivotell