I think you misunderstand, They are all individual logos and Lightroom wont let me import more than one logo at a time! I have multiply watermarks for other clients but I want to be able to add more than one watermark logo on the photos when I export without having to create them each time in photoshop when I do a different event
So for example I would have my logo in the bottom right, the clubs in the bottom left and each event that changes in the middle
You can combine the various logos and maybe a frame element etc, into one whole-page graphic overlay, in e.g. Photoshop - saving the result as an otherwise 100% transparent PNG of a suitable resolution.
Then your options include adding that whole thing as a watermark (visible only in the export, sizing will need to involve some trial and error);
or adding the whole thing as a Loupe Overlay (visible in Develop, can be useful to guide your cropping, graphic is scaled to fit the width of the image that is output) - in these cases the output file naming and metadata such as keywording will all be as expected for each photo.
Perhaps a simple Custom Text based watermark naming the event could be used together with a Loupe Overlay providing the corner logos.
Or otherwise, you can add overlay graphics and caption text etc to a page layout in the Print module and save out JPGs from there - in which case the file naming and metadata such as keywords, will not be individualised for each photo.