How to change evaluation time on rules alerting?

I have some rules created on Grafana Cloud Alerting, but i want to change the evaluation time from default (1 minute) to (20 seconds), how can i do this?

Is this a panel based rule or an Alertmanager rule? There should be some options for changing evaluation times within the rule itself depending on which method is being used:

Configure alerting in Grafana Cloud
Grafana Cloud Alerting