The overview page presents you with a summary of all the input parameters you have specified. You should inspect the parameters to check they are correct, - and if not go back and change them.
You have the option to specify the location of an eventual log-file from the conversion. If the conversion is successful no log-file is created, otherwise a logfile with a list of the files not matching the template is saved.
From the page you can either Finish the set-up, which will transfer your set-up definition to the current toolbox file, or Execute the set-up.