I am currently very obsessed with turning off various services I believe I don't need

C:\WINDOWS.2\System32\svchost.exe -k netsvcs, called Schedule. Personally, I never came across it.
C:\WINDOWS.2\System32\svchost.exe -k netsvcs, called BITS, transfer of data using unused bandwidth. Eh?
C:\WINDOWS.2\System32\svchost.exe -k netsvcs, Ianmanworkstation, I don't understand the description of it.
That's all for now. Thanks in advance.