Jose
If we're talking about paid for FSUIPC and WideFS, you should find a lot more tabs available to you if you go into Modules\FSUIPC (plus a registration details panel on the General tab of FSUIPC)
WideFS permits you to connect additional software "into" FS across a network, by broadcasting FSUIPC in a client/server way. As an example, using WideFS I run the flight logger, Active Sky and FSRealTime on a separate PC from Flight Simulator, which gives a fair chunk of CPU time back to FS.
If you only have one PC available, ignore WideFS for now, it'll only confuse the heck out of you.