UX updates to the Combinations and Omissions sections of the New Pattern pane are needed.

1. Change “Omissions” and “Combinations” accordion headings to “Omission rules” and “Combination rules”.
   Add an infoPopover to the Omission rules accordion, formatted as shown in the mockup, with the text:
   "Running this publication pattern will generate a minimum of one year's worth of predicted issues. Omission rules can be applied to remove individual issues.
   For example, to omit a public holiday, a specific month or week, or the "nth" issue from the year's set of predicted issues."
   

   Open

2. Add an infoPopover to the Omission rules accordion, formatted as shown in the mockup, with the text:
   "Running this publication pattern will generate a minimum of one year's worth of predicted issues. Combination rules can be applied to combine sequences of issues into a single issue.
   For example, to combine a number of days, weeks or months.
   The time unit "Issue" can be used to select the "nth" issue in the set of predicted issues."
   

   Open

3. When no rules exist display the message “No omission rules for this publication pattern” and “No combination rules for this publication pattern”

4. Change the button labels to “Add omission rule” and “Add combination rule”.

5. When an "Add" button is inactive display a tooltip with the text:

   1. “Combination rules cannot be added because an omission rule exists”

   2. "Omission rules cannot be added because a combination rule exists"
      See mockup:
      

      Open