You can add a column that was selected as display value for the object to make it clickable. For example for Case object display value is case number, so if the case number is added to detail it becomes clickable.
FYI, you could also just double click on the record to open it.
Hi Norton what I ask at the beginning of this Article and I think what Mohammad also wants to know is have a field like a Case number or similar, not a lookup, where if you click on this it open the case, in this case if you have a detail with some detail, could have some field to identify each line of this detail, like a correlative, and enable this field to be clickable to could click on it and open the detail line. Is that's correct