Disclosure: I am not proficient in this software and I want to know if I can speed up my prototyping of design. I know what I am asking might be pointless but still if there is such feature then hurray!! So I have attached a fig of truss with its terminology in hopes that it is easier to communicate.
Say I am making a truss of angle rod of 3'' * 3'' and 5'' * 5'' cross section area. What I want to do is after I input a length of 10, 20, and 50 inches or just have a line drawing of truss. Then I want to select 3'' * 3'' structure to lateral bases and webs and 5" * 5" to top and bottom chord.
Edit 1: I forgot to mention that if I now change the sketch by adding one more web and assign 3"*3" to new line then the design is re updated. It will be helpful when i try to visualize or run quick tests.