In a Primary Keyed Tables you can ADD a record using the main Frame's INSERT button
DMC will NOT offer up the next value in sequence depending on the Primary key .... so you HAVE to check the consistency of the inserted data
If you are in an SQL Table with GUID then a NEW GUID will be generated for you by DMC
CAREFUL : NO CHECKS are done at this level so it will be your responsibility to make sure all KEY conditions are met before saving to File otherwise you will get an error message
In which case the new record will still be help in Que for you to change it's Value and let you succeed in the Insertion.