Grab the word or line under the title bar of the tool options box (it'll say "Paintbrush" or "Eraser" or whatever tool you have currently selected) and drag it onto the docking area at the bottom of the toolbox.
For full details, see http://docs.gimp.org/2.6/en/gimp-concepts-docks.html
Answers & Comments
Grab the word or line under the title bar of the tool options box (it'll say "Paintbrush" or "Eraser" or whatever tool you have currently selected) and drag it onto the docking area at the bottom of the toolbox.
For full details, see http://docs.gimp.org/2.6/en/gimp-concepts-docks.html