Thanks so much for your help, we took it from there and came up with this, which gave us what we wanted:
source="TrafficLiveAll.csv" | chart sum("Allocated Time") over "Employee_s Department" by "Allocation Interval Status" | eval REQUIRED=(APPROVED+PENDING)/480 | eval CURRENT=APPROVED/480 | table REQUIRED CURRENT | transpose | rename "row 1" as "Business Development", "row 2" as "Capacity", "row 3" as "Creative", "row 4" as "Data Consulting", "row 5" as "Development", "row 6" as "General", "row 7" as "Marketing", "row 8" as "Project Management", "row 9" as "Quality Assurance"
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