I have to create a new (read-only) field in the Request Type, which should read value from another field from the Request Header type whcih is editable, and will be enterred during the start of the Project.
Can anybody help me out how this can be accomplished?
Sure, - create a new rule in the request type workbench - give it a name (and a description) - as a rule event choose on field change - in the dependency section add the field that should trigger the rule. You could e.g. select "Priority" here and set it to trigger if the in priority, critical is chosen (equals > constant value > critical) - in the result section select your read-only field - in the bottom right corner you enter the logic of the rule, in the example it could be a query like: select 'Attention', 'Attention' from dual - for each of the result fields you need to select two values (hidden and viesible) - save and test the rule