I have PSE 11 and am shocked not all the tools are displayed at the tool panel at the left. There are just four or five tools such as crop, text, hand, etc. I am trying to find the sponge tool.
There are several things that are different about the toolbox in PSE 11. You can't actually see the nested tools the way you could by right-clicking/click-holding a tool icon in earlier versions, irritatingly enough, but if you hover your mouse over a tool section, tiny almost invisible arrows appear at the upper right of tools that have other tools nested with them:
The only way to see what they are and to switch is now in the tool options.