Hide/Unhide the asterisk(*) on required fields:

You have made some field as required in record field property but don't want that asterisk to appear with field. 

In this case just use the property ShowRequiredFieldCue and make that true or false to show or hide that asterisk (*, also known as required field cue). 

Local Field &MYFIELD;
&MYFIELD.ShowRequiredFieldCue = False;