This rule will set a Blue pin icon in the new custom column beside the selected message.
Header and Conditions Tab
- Name: Priority 1
- When: Run Manually
- If: All > Always
Action Tab
- Choose Set number field
- with ID: 8071 (The field ID of the ExpFlag field)
- to: 14502 (the ID of the blue 'Pin' icon
- Set in Item (sets icon in the list view)
Command Tab
- Check Add to toolbar
- Command icon: Select the Blue pin icon by <Control> or <Option> clicking on the icon field
- Command name: Enter Priority 1
- Check Show name
- Tooltip text: Enter "Set to top priority"
- Command enabled: Choose Documents Selected
Save the rule