Mike Manger

Any Gravity Form multiple choice field (select, checkbox or radio) can be mapped to have the submission entries 
of another form as their values.
To create related fields edit a Gravity Form and go to ‘Related Fields’ from the Form Settings menu.
Any multiple choice field (select, checkbox or radio) can be mapped to have the submission entries 
of another form as their values.
To create related fields edit a Gravity Form and go to ‘Related Fields’ from the Form Settings menu.

Gravity Forms Related Fields Add-On

A plugin to dynamically populate Gravity Form fields with form submissions.

Gravity Forms Related Fields Add-On vs GravityExport Lite for Gravity Forms