making attributes of field dynamic in dialog program in layout editor.

hi,

to make a field required or possible or hidden, we define its attributes in attributes in layout editor.

is it possible to make attributes of fields that we define in layout editor dynamic ?

if functional people want to make some field non-mandatory or mandatory then they go in configuration, and do it. so does this mean that the attributes of the fields that we define in layout editor during dialog program can be made dynamic.

how is this possible ? because attributes are selected using dropdown, its not a code ?

please help in solving this mystery...