as title,
if i use the administrator, i can create scrum board, and then create new sprint that include different issue. but if i am the user, it not work, i can not create it, this button is dusty as below,
if i am user permission, in the board screen, i will create new sprint.

when i switch administrator, the button shows.

seem like it affect by some permissions, but what type of permission on it. how to grant the user use this function?
thank you.