How to prevent some users to access and see Active sprint?

[Reza Asghari]

We want to give permission to our customer to just add stories and issues to project backlog without accessing active sprint. (customer can only see backlog section and should not see the active sprint board) 

[Nic Brough -Adaptavist-]

Set your permissions so that these users have the right to browse the project and create issues, but not schedule the issues or see the boards.

They will still be able to see what sprint an individual issue goes into, but won't see the active sprints as a whole.