I am searching for the rectangle or circle lasso, but I can only find the free lasso.
PhotoLine offers so many tools, so that they don’t fit in the toolbar at the same time. Therefore some icons have a small red triangle at the right bottom. These icons are used multiply. By clicking and holding with the left mouse button a pop-up appears showing a selection of available tools. Now you can select one of them.
The lasso tools are used this way.