Answering customer's questions by updating docs. (#2042)

Answering customer's questions by updating docs.

docs/sources/jinja2-templating/_index.md

@@ -92,7 +92,9 @@ To customize alert templates in Grafana OnCall:
    - `Title`, `Message` used for Email
 
 4. Edit the alert behavior as needed:
-   - `Grouping Id` - This output groups other alerts into a single alert group.
+   - `Grouping Id` - Alerts with the same `Grouping Id` will be grouped into the same Alert Group
+if Alert Group in the state "Firing", "Acked" or "Silenced" exists. If previous Alert Group is in the state "Resolved",
+a new Alert Group will be issued.
    - `Acknowledge Condition` - The output should be `ok`, `true`, or `1` to auto-acknowledge the alert group.
      For example, `{{ 1 if payload.state == 'OK' else 0 }}`.
    - `Resolve Condition` - The output should be `ok`, `true` or `1` to auto-resolve the alert group.

docs/sources/notify/phone-calls-sms/index.md

@@ -20,6 +20,18 @@ weight: 100
 Grafana OnCall Cloud includes SMS and Phone notifications, OSS users [could leverage]({{< relref "open-source" >}}) Grafana Cloud as a relay or
 configure other providers like Twilio.
 
+## Are there additional costs for outgoing calls/sms?
+
+No, there are no additional costs for outgoing calls/sms.
+
+## Are there rate-limits for calls/sms?
+
+There are no specific limits, but we reserve the right to stop sending sms/calls in case of abnormal volume.
+
+## Route incoming calls to the engineer who is on-call
+
+Grafana OnCall does not provide a phone number for routing incoming requests. [GH Issue.](https://github.com/grafana/oncall/issues/1459)
+
 ## Is there a list of pre-defined phone numbers?
 
 In order to learn the phone number used by OnCall, make a test call at the "Phone Verification" tab.