نمیدونم چرا به صورت پیش فرض از سمت راست اindent میکنه. با دستور زیر میشه. ولی زشت میشه.
\captionsetup{format=hang,indention=18mm}
من بیشتر از این نمیدونم. باید منتظر جواب دوستان باشین.
ضمنا در راهنمای بستهی caption نوشته:
6.14 subfigure
The subfigure package[19] provides support for small or ‘sub’ figures and tables within a single figure or
table environment. This package is obsolete, new users should use subfig instead.
Since the subfigure package is obsolete it will only be supported in a way that old documents (which
have used the caption package v1:x during development) should still compile as expected.
Please use the subfig or subcaption package instead which both supports the caption package v3:x.
(See the subfig package[20] documentation for details.)