Created attachment 126948 [details]
File, which contains a table-template element
After I open a file, which has got a custom table template, then I see this template in the new category "Table" in the Style&Formatting pane in the sidebar and I can use it from there for a new table. But this template does not exist in the list in menu Table > Autoformat Styles.
I have used the attached file with Version: 188.8.131.52.alpha0+
Build ID: 6431e91eca9e44684066a32ed3d6411509dac781
CPU Threads: 4; OS Version: Windows 6.1; UI Render: default;
TinderBox: Win-x86@42, Branch:master, Time: 2016-08-21_06:34:00
Locale: de-DE (de_DE); Calc: group
(In reply to Regina Henschel from comment #0)
> ... But this template does
> not exist in the list in menu Table > Autoformat Styles.
Can confirm this.
I'm not sure however if that was intended to work, because I did not follow the project in details.
"Enhancement" might be better. The user can add a table template via "Autoformat Styles" and then use this in all of his documents. If he assigns this template, it is listed in the new tab "Tables" in the Style&Formatting window and he can use it from there for the next table in the same document.
If the user opens a file which has a table template created by someone else, he sees it in the Style&Formatting window, but the user does not know, how to make it available for a different document. For true styles like paragraph or character styles, you can load the styles from an existing document to make them available in your new document. But that does not work for the table "style".
There should be something like "Add table template to personal table template collection." or the load style mechanism can be extended to table templates.
As table styles are intended to supersede autoformat styles, i wouldnt suggest listing them inside the autoformat style dialog as a new table styles dialog will be created.
We made also a proposal  how to access the feature. The dialog (or rather a new one) would be used to create a style, and the selection goes into the table format dialog as well as the sidebar.