Required / not required fields
One of the system fields on our Activity layout is called 'Subject', is a 'Text (Short)' field and is required.
We still want a 'Subject' field that is required, however we would like to make it a 'picklist'. I know I cannot change the field type of a field so I would like to create a new field, however as the original Subject field is required, I cannot remove it from the layout and the required tick box is greyed out on the edit screen so I cannot make it 'not required'.
Also can you make a field a 'picklist' but also be able to free type in it?