ARCS attribute conditional on the result of another attribute

I have an attribute in ARCS which calculates whether a reconciliation is Material or not based on the movement value (difference between the opening and closing balances). I have another attribute where the preparer enters an explanation of the movement. I would like to make the 'Explanation of Movement' attribute which is type Multi-Line text mandatory (i.e. preparer has to enter the reason for the material movement) if the 'Material movement' attribute is 'Material'.
i.e.
IF 'Material Movement' is Material Then

'Explanation of Movement' is Mandatory (Required)

Else Not required (Optional)

Is it possible to implement this logic in ARCS using attributes?