WP Required Taxonomies – Categories and Tags Mandatory v1.2.1
Force users to select a taxonomy term when publishing posts. For example, make category or tags required
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12 WordPress plugins tagged “required”. Every result links to a crawlable PlugIndex profile.
Requirements Checklist v2.4
Allows admins to require content to be entered before a page/post can be published.
Required Fields v1.9.5
Required Fields can help you write your Posts, Pages without forgetting fields, if you forget something you'll be alerted about that!
Required Checkbox Validation for Elementor v1.0.0
Make Elementor Pro checkbox fields required. Blocks submission until at least one checkbox is selected, with client-side and server-side validation.
Single Value Taxonomy UI v0.3
This infrastructure plugin adds basic UI for single-valued taxonomies, i.e. a taxonomy with presents a select widget.
DCO Post Validator v1.1.0
Allows you to make post, page, custom post elements required: title, content, featured image.
Post Title Required v1.1.4
This plugin make post title require field and limit its character.
Email not required v0.4
Disable email requirement for user registering/editing.
Require Categories when Creating Products – WooCommerce v1.0.1
Force users to select a product category when creating or editing WooCommerce Products. For example, make category required.
Simple Content Restriction v0.1
Ask your visitors to login if the post is marked as visible only to registered users.
WP Required Taxonomies – Categories and Tags Mandatory | Default Selected v1.2
Before saving any post, taxonomies are required or by default selected when editing a post.
Make Checkout fields optional in Woocommerce – Technogiq v1.0
You can make wocommerce checkout required fields optional or optional fields required in woocommerce