Merge branch 'docs-group-issue-boards' into 'master'

Group issue board docs

See merge request !2882

doc/user/project/issue_board.md

@@ -256,7 +256,7 @@ to another list the label changes and a system not is recorded.
 
 ![Issue Board system notes](img/issue_board_system_notes.png)
 
-## Multiple Issue Boards
+## Multiple issue boards
 
 > Introduced in [GitLab Enterprise Edition 8.13](https://about.gitlab.com/2016/10/22/gitlab-8-13-released/#multiple-issue-boards-ee).
 
@@ -271,7 +271,7 @@ existing one.
 
 ![Multiple Issue Boards](img/issue_boards_multiple.png)
 
-### Board with a milestone
+## Board with a milestone
 
 > Introduced in [GitLab Enterprise Edition 9.0](https://about.gitlab.com/2017/03/22/gitlab-9-0-released/#boards-with-milestones-ees-eep).
 
@@ -291,6 +291,19 @@ milestone with the due date that is next.
 
 ![Update boards milestone](img/issue_board_multiple_milestone.png)
 
+## Group-level issue boards
+
+> Introduced in [GitLab Enterprise Edition 10.0 Premium](https://about.gitlab.com/2017/9/22/gitlab-10-0-released/#group-level-issue-boards).
+
+Group-level issue boards are analogous to project-level issue boards. They are accessible at the group
+navigation level. A group-level issue board allows you to view all issues from all projects in that group.
+(Currently, it does not see issues from projects in subgroups.) You can only associate group milestones
+and filter by group milestones for these boards. Similarly, you can only filter by group labels for these
+boards. When updating milestones and labels for an issue through the sidebar update mechanism, again only
+group-level objects are available.
+
+![Group-level issue board](img/group_issue_board.png)
+
 ## Focus mode
 
 > Introduced in [GitLab Enterprise Edition 9.1](https://about.gitlab.com/2017/04/22/gitlab-9-1-released/#issue-boards-focus-mode-ees-eep).

doc/user/project/issues/index.md

@@ -137,22 +137,13 @@ Find GitLab Issue Boards by navigating to your **Project's Dashboard** > **Issue
 Read through the documentation for [Issue Boards](../issue_board.md)
 to find out more about this feature.
 
-#### Multiple Issue Boards (EES/EEP)
-
-Multiple Issue Boards enables you to create more than one Issue Board per project.
-It's great for large projects with more than one team or in situations where a
-repository is used to host the code of multiple products.
-
-_[Multiple Issue Boards](../issue_board.md#multiple-issue-boards)
-are available only in [GitLab Enterprise Edition](https://about.gitlab.com/gitlab-ee/)._
-
 ### Export Issues to CSV (EES/EEP)
 
 Issues can be [exported as CSV](csv_export.md) from GitLab and are sent to your email as an attachment.
 
 _Exporting issues to CSV is available only in [GitLab Enterprise Edition](https://about.gitlab.com/gitlab-ee/)._
 
-## Related Issues (EES/SSP)
+## Related Issues (EES/EEP)
 
 Related Issues are a bi-directional relationship between any two issues
 and appear in a block below the issue description. Issues can be across groups