Hi,
OK , you mean , like you have 100 images, but you only want to , selectively , optimize 10 of them ?
If that is the case, then sadly no , it wasn’t designed that way.
only possible solution I can think of :
1. if your site has very few images , optimize them all , then reset the ones you didn’t want to be optimized back to its origin
2. upload the ones you want to be optimized to a different WP site with LSCWP , then optimize them , after optimized , transfer the generated files back to your original site.
Best regards,