Well... You can use the Aircraft service search to search just the aviation frequencies or program in the local control towers etc the same as any other frequency. I'm not going to get into specifics because there are lots of manuals available on here to cover that, such as this one:
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If you are using software do this : go to the database, look for the Pearson Airport Frequencies, if you don't have a premium membership then do this: using excel copy and paste the freuencies you want on a sheet then copy and paste the frequency,s you want on a system (or systems) you create. If u don't have software you can program in the freqencies by hand and tag them (name ) them yourself. Congrats for Finally getting a scanner.