When you configure a monitoring template, and enable QoS and Alarms (publish data & publish alarms), you may notice that only QoS was enabled for the SNMPcollector profile (alarms still appear to be "off") .
Release : 20.4.x, SNMPcollector, tested versions: 4.04 - 4.06
Working as designed.
If an alarm is enabled without selecting the alarm criteria then it won't be applied to profiles, therefore you need to specify at least 1 threshold for either "static" or "dynamic" criteria in the template configuration.