I'm using P2P to link two CPT. I already connected the two CPT but the default admin box can't fit my needs. Imagine this scenario:
CPT 1 have a custom field of YES or NO choice (0 or 1 in database) and is the FROM for P2P.
In the CPT 2 I need a custom box for P2P with a select field (YES, NO or BOTH) that filters the results that the P2P brings to connect. Like if Yes is selected the results should show only posts from CPT 1 that contains the custom field market at YES, and vice-versa, dynamically when user is creating a new post in CPT two.
I'm new to PHP and WordPress development and don't know where to start that...