How to make Authors' Last name OPTIONAL?

Could I ask for as to how to make the authors’ last name optional, presently the last name along with the first name is compulsory. (I am asking this under Quick Submit mode and presently using OJS 2.4.7.0.).

Thanks in advance!

Regards.

This will be a fairly complex change, and is currently being discussed for 3.x. You can see some of the conversations to this point here:

If you have PHP experience, we can point you to the particular issues with QuickSubmit in 2.x, but a small workaround here will potentially lead to many other needed changes in other areas, as documented in the Google Doc. (For example, CrossRef only requires the author’s surname.)