Hello,
Its not possible to do that through ‘Custom Posts’ tab however its still possible to do that using Advanced Expression assignment:
You can do that by using expression as following:
^http:\/\/EXAMPLE.COM\/CUSTOM_POST_TYPE(\/?|\/.+)\?.*$
You need to replace EXAMPLE.COM by your WordPress website address and replace CUSTOM_POST_TYPE by custom post type name (ie: products, items, downloads, etc…)
Please let me know if you still need anything.
Regards,
AHMeD