Use the stock tickers for all the companies you want to compare. Put in just the ticker values - like 'CAVA' or 'SG'.
The most recent form of this type will be used for both companies. Use 10-K to use the most recent ANNUAL data, or 10-Q to use the most recent QUARTERLY data. Note that Annual comparisons can be more comprehensive, percise and less susptible to seasonality, but quarterly data is often more recent.