For your indented paragraph, that setting can be left as the default to continue using the same style. Then, in that style, specify the style name for the indented paragraph that follows it.

If you wish to create an indent affecting lines in a single paragraph, with an insertion point made in the text, from the Text menu, select Insert>Tabs and Spaces>Indent To Here to set an indent up to that point.Modify the style used for your section heading to specify the style name you want for the paragraph following it (the Style for following paragraph setting in the Modify Style dialog). The right indent tab will ignore formatting set by the Frame Text Ruler and will set an indent on the right-hand edge of the text frame. To add an individual or one-off right indent tab, with an insertion point made in the text, from the Text menu, select Insert>Tabs and Spaces>Right Indent Tab (or press the -tab keys). To precisely adjust indent settings using numerical values, open the Paragraph panel and adjust the indents from the Spacing section.

The text ruler will appear when an insertion point is made in the text.

From the View menu, ensure that Show Text Ruler is checked.

From the context toolbar, ensure that Frame Text Ruler is switched on.

The Right indent (C) is set in relation to the object's right margin (or text frame edge if the margin is not set).

The Left indent (B) is set in relation to the object's left margin (or text frame edge if the margin is not set).

The First line indent (A) is in relation to the left indent.

How to put a first line indent in word