In order to enable this for yourself the project admin of the DPO project will need to change this on your user permissions.
For the administrator:
Click onto your email address in the top right-hand corner of DPO and select 'Administration'.
Once you are in the admin section select users from the list on the left hand side.
Once you see the list of users that appear select the pencil icon next to the users permissions you would like to change.
If the user has one approval level you can select either.