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You can define a condition based on any added attribute or membership in any group (Reported / Assignee / Current user in group). Configured rules apply to the Edit screen and define which groups can be added to the particular custom field.
Adding a condition:
In Rules section click Add condition.
Select an attribute on which you want to base the rule and add necessary parameters.
Click Save config to confirm.
You can build more complex conditions by combining them into condition groups. Click Add condition group at the right-hand side to add a grouped condition. To add further conditions to this group click Add condition. To define how conditions will be applied select All of the following conditions or Any of the following conditions.
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