Force Login to see Donation Form

Hello.

Does anyone know how to force login or registration, before a site visitor is able to see the donation form? I want them to be able to see the actual donation page with all the info, but have a message where the form would normally be, saying to either login or register. I saw this on another sample demo site that was using Charitable plugin and I can’t find the option to turn a feature like this on, anywhere in the settings panel. Possible it is something they coded themselves.

I am currently testing on free version of WPCharitable.

Thank you. 🙂

PS – As I am writing this… I suppose one answer could be to use the Donor For on Separate page option in Settings and then make that page only viewable if signed in. But maybe there is a way to do it and keep the form on the same page as the donation information / imaages and descriptions.