Hi Gowtham,
sure, you can achieve this with a Power Automate flow. But first making sure, that I understand your requirement correct, because your description does not match in my opinion the "Entity 1 , Entity 2.."
What I understood from your description is, that you have Entity Insurance. Besides the Insurance specific values, there is 1 Lookup for Quote and 1 Lookup for Order on the Insurance.

Insurance n:1 Quote
Insurance n:1 Order
Prerequisite: Build your Power Automate flow inside a solution

Step 1 - Identify the trigger:
Use an automated flow with Dataverse trigger "When a row is added…" and select create

Configure the trigger, that it will only run, when an order is created.

In addition, you can further specify the trigger, that it will only run, when the order is created by a quote and not directly - this will reduce the flow runs. Click on the ... and select settings.
Add a Trigger and enter the Trigger condition. If you do not know the name that must be entered, have a look at the next compose step below:

To get the information needed for the trigger, you can easily add a new step to the flow of type Compose and select the Quote from the 1st step. Then click on the … and "Peek code)


Then you can copy the code and add the necessary check: "@not(empty(triggerOutputs()?['body/_quoteid_value']))"
Now you can delete the compose step, as it was only helpful to identify the trigger.
Step 2: List all Insurance records related to the originating quote

As my publisher is called pod, I have to filter the insurance table for all records where the column pod_quote contains the original quote id

Step 3: Update the Insurance records
Add the final Dataverse action: Update a row and select Insurance from the previous "List all insurances" step
Once the value is entered into the update action, Power Automate will automatically generate an apply to each, as the reuslt of the provious step can be multiple records


Now you need to specify which order should be related in the Order Lookup. Entering only the value of the first step in the flow will not be sufficient. You need to add salesorders/ before you select the Order from the first step.
And that is already the solution. Save the flow and test it by adding insurance records to the quote and by activating the quote and close as won, the order will be created with the same insurance records attached.
Please mark this answer as verified, when it was helpful for you.
Best regards,
Joergen