TomTom Mazda NB1 Reference Manual page 54

This means you can, for example, create a new POI category called Friends. You could then add
all your friends' addresses as POIs in this new category.
Tap the following buttons to create and maintain your own POIs:
Add POI - tap this button to add a location to one of your own POI categories.
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Warn when near POI - tap this button to set your device to warn you when you are near
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selected POIs.
Delete POI - tap this button to delete one of your own POI categories.

Edit POI - tap this button to edit one of your own POIs.

Add POI category - tap this button to create a new POI category.

Delete POI category - tap this button to delete one of your own POI categories.
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