Draw freeform selections with the Lasso tool

Select Select area > Lasso  .

Select the more menu   to adjust the Feather slider and define the feathering width.

Draw a freehand selection border.

Select the more options   menu and choose from the following as needed:

• Load mask into selection: Add your layer's existing mask to the selection you're creating.
• Select all: Select all content in the active layer.
• Invert selection: Invert the selection so that the deselected area becomes the selection.
• Clear selection: Clear the selection.

Once the selection looks good, select the checkmark  .