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Neal, the only ambiguity in your description is that Fast Moving and Slow Moving both include 'weekly'. What's the differentiation? But the basic answer to your question is yes this can be done using a calculated field to bin the inventory movement. If you can post a packaged workbook or Excel file with some sample data (20-30 rows) I'll be happy to show you how to set up the binning.
By the way the last two groups also could be considered a 'frequency', just a frequency of zero.