Hello @Meenu Bhutani ,
Thanks for reaching out and welcome to the community.
Are you by chance using a Next-Gen Project? as the Parallel sprint feature flag you're talking about enables parallel sprints for classic projects but not next-gen ones. It is mentioned in the info block at the top of this document, and we are tracking the implementation of the feature for next gen here:
When to use CSV importer When managing your processes in Jira, there are many occasions where you need to create a lot of tasks. Creating them one by one will cost you a lot of time and effort and i...
Connect with like-minded Atlassian users at free events near you!Find an event
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no Community Events near you at the moment.Host an event