The colour profile is sRGB to match projector calibration
As far as possible upload more than one at a time.
It is helpful if you put your name in the EXIF data as Author, because some cameras put their Brand as Author. (You can actually set it IN some cameras, eg Canon!) Large files may take 5 - 10 minutes to upload; so if you want to reduce this time you could reduce your file size to the resolution of the Projector: either 1400px wide X or 1050px high, square images should be 1050px on both sides. It will not affect the quality.
Once you have registered, you can upload your pictures and you will be prompted for titles. Any problems or queries .... contact Projectionist: Linda Paul She will confirm receipt within 48 hours; if you don’t hear from her, presume she has not received them. WORKSHEETS YOU MIGHT FIND USEFUL