Abbott FreeStyle Libre User Manual page 89

You can set up the insulin calculator using the Easy or Advanced
settings . The Easy Setup is for patients who start with a fixed dose of
rapid-acting insulin for meals . The Advanced Setup is for patients who
count carbohydrates (in grams or carbohydrate portions) to adjust their
rapid-acting insulin dose for meals .
You must complete all of the steps in the insulin calculator setup in order
for the patient to use the calculator . When you have finished setting up
the insulin calculator, you can review the settings to make sure they are
correct for your patient . You can also review settings at a later time . Touch
the Settings symbol
Settings .
IMPORTANT: If the time on the Reader is wrong, this may lead
to an incorrect suggested dose .
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from the Home Screen, then select Calculator