Hi all, I have a question related to a COUNTIFS formula I'm trying to define - I have a Gantt Chart that I use for planning and analysing workload, and I'd like to plot some figures related to efficiency. I'd like to be able to plot P.V.A against Assigned Person by Month (based on the START DATE column). My initial plan was to use COUNTIFS to do this but I'm having trouble getting the formula to include the month in it's current format - any advice? Sorry about the screenshot, work PC won't let me use L2BB. Thanks!