If you create a lead and enter a venue name (Examples: Hotels, Parks, etc.) it will save the venue details here to be recalled again in the future on other leads such as the venue address details and venue notes. Then, the next time you want to recall this venue on a lead...just simply start typing in the venue name and choose the venue in the suggestions.
You can add venue notes directly to the lead or here on the venue list. (Examples: info about stairs, elevators, parking, etc) Changing the Venue Notes for one Event will change the Venue Notes for EVERY other lead that has the same venue attached to it.
This settings page is a list of saved venues so that they can be edited and saved when needed.