On the היומנים שלי page, select a calendar you wish disable alarms for.
Click לַעֲרוֹך.
Step 2
Click the tab אַזעָקָה and set both alarm settings to אף אחד.
Click להציל.
The new settings take effect the next time your application downloads the calendar data, usually within a couple days. You may also do it manually to receive the update right away.