Quick Start Guide
This guide walks through one small rule: on the Create screen, hide Due date when someone creates a Bug with High priority. A high-priority bug gets fixed right away, so asking for a due date only adds noise. Every other Formify rule is built in the same dialog, so once this one works you know the whole flow.
You need project administrator permissions in the project, and Formify installed. Not installed yet? See Installation & Setup.
Create the rule
Open the field in Formify
In your project, open Space settings and select Formify under Apps. The Create Issue tab lists the fields on the project's create screens. Select Due date.

Formify lists the fields for each screen
Add a visibility rule
The field's page has one tab per kind of rule: Visibility, Required, Value, Read-only, Description and Name. Stay on Visibility and select Add Rule.

Select Add Rule on the Visibility tab
Limit it to bugs and pick the action
In Scope, set Work type to Bug, so stories and tasks are not affected. Under Action, select Hide field.

Scope set to Bug, action set to Hide field
Add the condition
Under When (Conditions), select Add Condition, then Field value. Set Field to Priority, Condition to equals and Value to High, and select Save. Then select Create Rule.

The condition: Priority equals High
The rule appears on the Visibility tab as "Hide due date when Priority equals High" and is active straight away.

The saved rule
Try it on the Create screen
Select Create, choose Bug as the work type and leave Priority at Medium. Due date is on the form.

Priority Medium: Due date is visible
Now change Priority to High. Due date disappears without reloading the form, and comes back when you switch Priority to another value.

Priority High: Due date is hidden
If the field doesn't hide
- Check the work type. The rule only runs for Bug; on a Story or Task the field stays.
- Check the project. Rules belong to the project they were created in.
- Check the field is on the screen. Formify can only hide a field that Jira already shows on the Create screen.