Managing requests on GitLab
GitLab.com repositories connect the same way GitHub ones do, from the Repositories page — see the provider picker in that onboarding wizard for the current options. The only delivery style available for a GitLab repository is Create and track MR, once GitLab OAuth is configured in your environment; direct push (no review step) is GitHub-only.
Create and track MR
CustomerShip opens a merge request against your target branch. When you merge it on GitLab, CustomerShip notices and the request's status moves to Shipped — same as it would for a GitHub PR.
Not yet available for GitLab
A delivered request's in-dashboard review activity — the panel showing individual review comments, and the button to queue a re-work pass against selected ones — currently only works for GitHub pull requests. For a GitLab merge request, that panel is unavailable; review the MR and its comments directly on GitLab instead. The same goes for the comment-triggered re-work shortcut described in Managing requests on GitHub — there's no GitLab equivalent yet.