- Don't use a tabulator (^t) but a right tabulator (^y, shift-tab) before the numbers.
- Use a last line right intend and a right intend for the paragraph, similar to the hanging intends for bullets at the beginning of a paragraph, but here at the end.
Issue 2 (make 2 different questions)
Work completely with Paragraph style. No word without a paragraph style.
Have you clicked More Options in the Generate Index dialog box? (I can't tell from your questions.)
Each level is already assigned to a paragraph style, so all you need to do is continue using it and change the definition (or assign a different one if that works better for you). Each time you generate the Index, it will retain your formatting.
Each Entry Separator has a pop-up where you can select the separator from a list, or you can type it in.
Comment: A new index generation won't keep all manual overrides done in the index text as char styles you could apply! …