In Impewaa > Tools > Customize > (Menus/Context Menus/Toolbars) > Add Command, the category "Styles > Table Design Styles" is empty.
Since no table styles are available in Impress yet I don't know what styles should be available here.
Impewaa > Impress
*** Bug 107855 has been marked as a duplicate of this bug. ***
(In reply to Thomas Lendo from comment #0)
> Expected behavior:
> Since no table styles are available in Impress yet I don't know what styles
> should be available here.
There are table styles. When you select a table, there is a "Table Design" panel in the sidebar. It shouldn't be hard to make those styles appear in the list (same approach as in Bug 107852 would work here too), but make them actually work in toolbar/menubar will require more work. So I think I'll just hide this category for now.
Maxim Monastirsky committed a patch related to this issue.
It has been pushed to "master":
tdf#107853 tdf#107854 Hide useless style families
It will be available in 5.4.0.
The patch should be included in the daily builds available at
http://dev-builds.libreoffice.org/daily/ in the next 24-48 hours. More
information about daily builds can be found at:
Affected users are encouraged to test the fix and report feedback.