?!? not sure what you mean
like a generic resistor symbol with 100 different values ?
there is two ways to do that : using a database driven (can be an excel spreadsheet) library.
or by simply dusplicating a part in the library.
i have a master library that has a symbol like 0805R-GENERIC.
this is a generic 0805 resistor with the PCB footprint attached.
whenever i place that i can assign buying information to it. once i do that i clone it back into the library. Over the years i have grown my own massive library of parts.
you downalod my library at
www.siliconvalleygarage.com