Hi @HarishGa,
I am going to use an example, showing the range as "Last 6 Full Months", and I will make some exclusions / inclusions based on some predefined ranges.

I created these segments like this:

and

These are just using standard date ranges... and because these date ranges are inside the panel range, they aren't taking over the panel.. such as in this example where my panel is set to "Last Month", but my segment is looking at "3 Months Ago"

My table is showing 3 months of data... This is a problem if you are trying to do something like identify users who are on the site recently (i.e. Last Month) who made a purchase Last Year... you only want to see "Last Month", but the data gets corrupted...
However, if you want to avoid the use of Date Ranges, you can also build segments based on specific date based dimensions.. such as "Month" or "Month of Year" etc:


There are multiple ways to approach this.