## Context - Exclusive ~"EE Premium" feature only ## Problem Statement Users of the Service Desk desire a way to customize the issues created by the Service desk. Some items of interest are: > As a support manager, I'd like to assign a specific user all issues created by the Service Desk to a specific user. > As product manager, I'd like all service desk issues to be labeled with a specific label (eg. `customer issue`). ## Description * Allow the (optional) specification of a service desk issue template that would be appended to all service desk issues. * This would allow the use of `quick actions` to assign the issue to specific people, apply labels, etc... * This optional service desk issue template would be stored `.gitlab/issue_templates` and would be selectable within the configurations settings page. The screenshot below shows an earlier iteration where the template would be edited inline of the settings page. The template text box will be replaced with a selector in which the user can select an existing file template. We should be sure to note that the selected template will be `appended` to the incoming issue within the UI.  ## Documentation Updates The following is an initial list of expected documentation updates: * Explain how to add an optional template to the issues created by the Service Desk * Example showing how to use `quick actions` (to assign to a user, add a label) with link to current `quick action` help * Clarity that the template will be `appended` to the incoming issue email ### Update Backend is done. The remaining steps about how ~frontend can integrate can be found on https://gitlab.com/gitlab-org/gitlab/merge_requests/19515 description. <!-- triage-serverless v3 PLEASE DO NOT REMOVE THIS SECTION --> *This page may contain information related to upcoming products, features and functionality. It is important to note that the information presented is for informational purposes only, so please do not rely on the information for purchasing or planning purposes. Just like with all projects, the items mentioned on the page are subject to change or delay, and the development, release, and timing of any products, features, or functionality remain at the sole discretion of GitLab Inc.* <!-- triage-serverless v3 PLEASE DO NOT REMOVE THIS SECTION -->