I have a really specific Problem. In my case it is necessary to deactivate or hide, inside the Collabora Menu bar, the subpoint “Save as …” or “Save” by standard. I found out, that it would be possible to to make custom changes by the API (https://www.collaboraoffice.com/collabora-online-editor-api-reference/) - Toolbar options. Unfortnetly I cannot find the files inside the Nextcloud App directory, I would need the modify. Maybe there are somebody out there to give my some advise how to solve my problem?