Login to the portal https://portal.azure.com/ with the desired credentials.
Click on “More Services >” from the left navigation bar and in the search by category section, type “Elastic” and select the “SQL elastic pools”.
Select the preferred elastic pool from the SQL elastic pools.
A new window opens with “Overview” of the SQL elastic pool and Click on “Configure Pool” from the top navigation bar.
Under Configure Pool section, current size of the Elastic pool will get displayed under the “Elastic database pool settings”.
Increase the Pool eDTU which parallel increases the Pool GB and Max number of databases allowed. Also it displays the “Monthly Cost”.
Once the size increased as per the requirement, click on “Save” button from the top navigation bar.
It will take 5 to 15 minutes to complete the changes. The progress can be viewed under the “Notifications” button from the portal top navigation bar.