Need to understand Staad Design Parameters for IS800 and IS456

Is there any sample problem of STAAD  or any documents which can help to understand how and in which conditions STAAD Design parameters can be used for IS 800 and IS 456. 
Basic parameters like FYLD ,Fck , CLEAR ,TRACK,TAKE OFF are easy to understand,as Descriptions are given in STAAD help content but 
               Some of the parameters are difficult to understand when to be used.If references or any documents are available please help with that and share here 


Thank you