NOTE: Function Types are stored at the 'Global' level and are not unique to each Event.
STEP 1: Go to Functions > click 'Function Types' under the 'Settings' header:
STEP 1: Go to Functions > click 'Function Types' under the 'Settings' header:
STEP 2: Click on the Function Type Name you want to edit:
STEP 3: Update the Function Type information and click 'Save':
NOTE: this screen refers to "Lookup Values" because you can also access these settings under 'Settings' > 'Lists'