Auto Fill Text With counting Function

Good evening

In the attached workbook, I am trying to write a function that will autofill the text in column B. However the text I need to fill is derived by a formula, in that it will mvary dependant on the input into Cell E1.

What I need to do is count the number of entries in column A .. easy enough.
I then need to divide this count by the number of Worklists in Cell E1. Easy again.

My problem is then filling the text in column B with the Wording "Worklist" and an even distribution of the Work between however many Worklists there are.

eg .. there are 30 rows of data, and 5 worklists ....
The top 6 rows will have worklist 1, the next 6 worklist 2 etc etc. to break down the rows evenly across the worklists