Simple I want to modify a style to have an indent of 2.0 cm

HOW?

Can't edit the text box at the bottom

This text can not be manualy edited to any other value.
Indent: Left: 1.27 cm, Tab stops: 1 cm, Left, Based on: Normal

Clicking on the indent button gives fixed values of 1.27, 2.54, 3.31 etc

Simple question I want to indent to a value of my choosing.