Grouping alarms can be done via correlation rules:
https://docs.dataminer.services/user-guide/Advanced_Modules/Correlation/correlation.html

Suppressing alarms can be done via masking:

https://docs.dataminer.services/user-guide/Basic_Functionality/Alarms/Working_with_alarms/Masking_and_unmasking_alarms.html

Or suppressing alarms can also be done via editing your alarm template:

https://docs.dataminer.services/user-guide/Basic_Functionality/Protocols_and_templates/Alarm_templates.html