by Naif Amoodi on WordPress.org
A framework which can be used by developers to add fields to various areas of the administration panel either manually or using the Visual Builder.

An Administration Menu
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WordPress Fields Framework Documentation
This plugin can be used to add fields to:
Sections for Posts and Pages can also be displayed conditionally depending on whether a Page uses a certain Page Template or whether a Post uses a certain Post Format. Sections can also be displayed conditionally depending on the Post IDs, Titles or Slugs.
Currently the following types of fields are supported:
All fields except the Editor field can be made repeatable.
If you feel the need for an additional field type then please use the support forum and leave your suggestion. This will be looked into ASAP.