Upload Powerpoint/Keynote slides on the Planning Website

Currently, my pastor sends me his Powerpoint slides in an email every week and I add them to our presentation in Presenter. It would save us some steps if he could add the slides to the service in the Planning website.

I understand that a similar result could be achieved by having him install the Presenter app, import his Powerpoint and then add a cue with it, but having him use the app would likely lead to confusion and certain cues being modified by accident.

I accidentally posted this to the Presenter forum. I do not see a way for me to edit/move/delete this post.