Ответ: Автозаполнение пробела точками
Я в хелпе искал, да немного не там, ночью не сообразил...
To add a tab leader to a tab:
In the Tabs palette, select a tab on the tab ruler.
Type a pattern of as many as eight characters in the Leader box, and then press Enter or Return. InDesign repeats the characters you entered across the width of the tab.
To change the font or other formatting of the tab leader, select the tab character in the text frame, and use the Character palette or Type menu to apply formatting.
спасибо.