Create the list

First, we need to create a list to manage the outbound calls. You can skip this if you already have a system that holds such tasks.

In our example we simple use Microsoft Lists. On your outbound service in Teams, add a tab and add a list. Define the list columns as follows:

Name - Type of the column:

• Title - Single line of text (default)
• Number - Single line of text
• Datetime - Date and Time
• Status - Yes/No
• Comments - Multiple lines of text

Optionally, you can add a conditional formatting on the Status column with the following rules:

Add some test data to it.

✅ We are ready to read these values and generate outbound service calls.

Create the flow

🔍 If you are using Microsoft Lists, the flow is very quickly set up.

Description	Screenshot
Start with a Recurrence trigger. We want the flow to check the list every minute.
Add a Get items element of the Sharepoint Connector to the flow and set the Site Address and List name to yours. Filter Query: Status eq false and Datetime lt '@{utcNow()}'
Now add a AddOrUpdateOutboundTask from the Nimbus Connector to the flow. Set the properties to Destination=items('Apply_to_each')?['Number'] DueDateTimeUTC= items('Apply_to_each')?['Datetime'] ServiceUPN = Your outbound service call enabled service UPN CustomCallContextParameters = Customer.DisplayName = items('Apply_to_each')?['Customer Name'] CallbackReason = items('Apply_to_each')?['Comments ']
Now we want to set the status to Yes in the list so that the entry is labelled as scheduled. Add a Update item element to the flow and set the fields accordingly.

✅ Enable your flow in Power Automate. You are ready to test it.

Test your flow

Add some entries to the list with a Datetime value in the near future and observe that calls get created in your Outbound service in Nimbus.

You can see such outbound tasks using the Supervisor dashboard and a "Service Outbound Tasks Tabular".