Create a custom button (short code) that creates a child custom post type that creates the relationship to the parent post type.
Click on parent post type
"create child post type button" -> Action creates child custom post type and creates relationship, then opens the child post for editing
32 freelancers are bidding on average $20/hour for this job
hello, i saw your requirements. i have enough experience in wordpress plugin. if you need, i can help you asap. now, i 'm ready to start. thank you.