Thanks Tracy, for the helpful link !!
However, Scheduled Tasks link is disabled in my case. Please find the screenshot attached for your reference and kindly let me know what needs to be changed to enable scheduling.
The scheduled refresh of extracts is controlled by several factors. The Embedded Credentials and Schedule options must be enabled in Tableau Server first. Next, open the workbook in Tableau Desktop, log in to Tableau Server and re-publish it. The option to set the schedule and embed credentials will be available (embed credentials only if the data connection uses Specific User name and password authentication).
The following KB article also provides further information on scheduling tasks:
Hope this helps!
Embedded credentials and Scheduling options are checked. Re-opened the workbook in Tableau Desktop, published after logging in, still Scheduled Tasks link is disabled
Is there some changes to be made while configuring the Tableau Server?