The General tab of the Writing System Properties dialog box has a check box you use to indicate the direction of the text entered in the current writing system.
Select () it for a right-to-left writing system.
The Paragraph tab of the Styles dialog box has a Direction control. For the current style, it sets the direction of data in views like Dictionary and Reversal Indexes. Unspecified means the direction is inherited.
For example, when the Direction control for the Dictionary-Normal style is set is right-to-left, the view aligns to the right, and the headword is correctly moved to the right, and the justification is on the right.
Carefully examine the entries to make sure all the data is presented correctly. You may want to get more help.
You can use the Format toolbar to select a writing system. Then if permitted, you can
embed right-to-left words or phrases in a left-to-right writing system, or
embed left-to-right words or phrases in a right-to-left writing system.