How to add new dropdown value in record form page?

[AFA]

Dear Team,

Is it possible to add new dropdown values in the following field on this page ( localhost/subjectsplus/control/records/record.php)

1. Format
2. Access Restrictions
   
3. Status

and how to display the Default Source Type field that is on the record.php page to display in as a dropdown databases.php

Thanks,

AFA