Form Fields based on CPT Sub-Category

Hi Paolo,

Just wondering if it is possible to create custom form fields in the listing registration based on the sub-category of CPT?

For instance,
I wish to create a custom post type “Sports Professionals”
This is then sub-categorised into things like

• Sports Coach
• Massage Therapist
• Fitness Instructor

etc…

I would like to have multi-select options based on the sub-category chosen rather than just the parent CPT
ie.,
Massage Therapist offers following treatments

• Sports Injury Massage
• Deep Tissue Massage

etc.

So if Listing Owner registers as Massage Therapist than the only options they will see in Multi-Select will be under this category.

Many thanks

Shane