Multicolumn sort with a default/unchangeable primary column

Hi, first of all thanks for putting this project together! My question is: can I make a column which will always be the primary sort column and is unchangeable and all the other columns are secondary but can change sort order.
So for example I have a column with the data: is_active. I want to have the active rows at the top *always* but I want to be able to sort the active contracts by name or some other value.
I know this explanation is all around the place, please let me know if I need to clarify it more.

Thanks!