It rather depends on what media format you choose to use for those church records.
If they are a separate JPG image for each frame of the microfilm, then create a separate Media record & image for each JPG file.
Multiple Media records can be linked to one Source record so that all frames get displayed and included in Reports, etc.
If the microfilm frames are all held into a single PDF document with multiple pages, then that needs one Media record & PDF file.
That can be linked to a Source record and opened via a PDF Viewer such as Adobe Acrobat, but cannot be included in Reports.
Other media configurations are possible, and it is usually easy to convert from one to the other.
Regards, Mike Tate
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