change default list indentation for all lists, word 2010
Click on the Multilevel List button on the Ribbon and choose Define New Multilevel List.
Then, increase the "aligned at" value by the amount you want to indent and increase the text indent level by the same amount.
Select "Set for all levels" and set the "additional indent for each level" to the value you want.
Press okay and then okay again.
You should be set.
(And welcome to Superuser!)