I'm a site administrator, I've enabled Parallel Sprints in Jira > Product settings, but I could not start multiple sprints, with or without tasks.
Is there any pre-condition that must be met for multiple sprints to be able to start?
At the moment, I can only start the top sprint, while the lower sprint in the backlog, has a greyed out start sprint button.
Would appreciate any help possible please.
Many thanks.