simple example; create a sketch then extrude the sketch. Now goto part families, on top of this screen you can add expressions or components or features, etc. choose a parameter of our sketch (=double click on it or add.. in between the two screens) choose another parameter for ex. the end parameter of of our extrude, add it by double clicking on it. Then goto create, an excell sheet will open.
First two columns are your names of the new parts, if your template is called 123 then fill in on the second row (first row is occupied by two numbers in the parameter columns) 123-A in the first column and the second. Now you have two columns left with the two parameter, leave them as you will have the origanal part created with those parameters.
Then on the third row fill in 123-B for the first two columns and change the two parameters.
Goto tab Add-ins on the top of the screen , and you will see a part family pull down menu appear. In this menu choose create and the two new parts will be created. Dont forget to save youre family table in the part family pull down menu Save family. This excell sheet is then saved in the template file 123.
If you want to make changes to 123-A and 123-B, open 123 and goto part families - then choose edit (you can add features or parameters to the excell sheet) open the sheet adapt the expressions and update your members by choosing update parts. If you make a new revison of your part, dont forgot to re-create the part members because they will not be generated auto.
you can also add features to the table, instead of numbers you use YES or NO to switch the feature on/off.
If you use components in the table in an assembly, just type in the component number/name and it will change in the assy according to what you filled in in the excell sheet.
If you still have questions, go ahead....
Hope this helps a little.
Best regards,
Michäël.
NX4.0.4.2 MP10 / TCE 9.1.3.8_build_0711 / NX6.0.5.3 + TC8.1 Unified / NX7.0.0.9
Belgium