What are preferred settings for uploading a powerpoint? Video Link?

Call for Proposal Forms: 

We have a Youth Leadership Summit and require speakers to upload PowerPoint presentation. I am not real familiar with average ppt sizes or setting that need to be changed/increased? 

How do I allow speakers to add a video link to Call for Proposal application? 

You can use the upload field field, to allow users to upload PPT files or other type of files.

The toolbar of this field enables you to edit the max file size allowed

You are also able to modify the files permitted

In you other question, can you please elaborate a bit more. I do not think you would like to them to upload the video as well. You can create a text field where the end user can type the URL of the video.

If I am mistaken, please let us now. We will be glad to help.

Thanks, so what size is average storage to upload? What is a max file storage?

I am not real technical. What does 1024 (1MB) equal to? 1 or two powerpoints? 

I am trying to google average powerpoint sizes and not getting far. 

What is a decent size to use? I don't know MB sizes and how they related to
an average powerpoint.
...

An average power point presentation should not weight a lot, unless you insert high definition pictures. So I guess a limit of 5 MB per file should be fine.