Welcome, Jeff.
It’s quite straightforward with PhotoLab - Simply select the “band-aid” icon from the toolbar …
- you’ll get a tool that you can move around … and you can change its size with the mouse (middle) scroll-wheel
- position it over the object and “click” … if the object is large’ish then you can drag the tool over it
- the result you get will depend on the complexity of the background and other closely-related objects
- if the result is not quite what you expect - then Reset and try again.
More info is available in these tutorials …
Regards, John M