In Writer: Format - Page Style - Page tab In Calc: Format - Page - Page tab In Draw: Page - Properties - Page tab In Impress: Slide - Properties - Slide tab In each case, press Help button on Page/Slide tab. Screenshot for Writer is shown for all modules (where each module is different). And Writer screenshot also needs to be updated.
Auto-Screenshooting is currently working poorly. Depending on the widgets of the dialog, it may be unusable. to run the screenshots and see if it can be of use, please read https://wiki.documentfoundation.org/Documentation/Screenshots (for all languages) Note: manual screenshots works, but you must do it for each (~70) language.
Additional complication. Currently screenshot(s) are configured as cui. https://opengrok.libreoffice.org/xref/help/source/text/shared/01/05040200.xhp?r=79978cd8#49 So in addition to screenshots for each module, the embed would have to be changed to be module specific.
Seth Chaiklin committed a patch related to this issue. It has been pushed to "master": https://git.libreoffice.org/help/commit/fc8fdf63f2eda1bf4715a288f07fd5598970406f tdf#137196 update help for Format Page tab for all modules
Help page for Format-Page is updated for all modules, so changing bug summary. Will not attempt updating the screenshots.