Disable Store Setup for Vendors

Hi. I’d like to disable the store setup wizard the first time someone logs in as a Vendor. I saw this code posted on a different forum.

/**
** disable vendor dashboard widget.
**/
add_filter( ‘wcmp_vendor_store_setup_wizard_enabled’ , ‘__return_false’ );

But I don’t know where to add the code for the desired results. I’d appreciate it if someone could point me in the right direction.