Multi-messenger real-time studies are in an exciting stage both in terms of ongoing observational programs as well as in terms of planning for upcoming large observatories. To ensure that these data are being optimally used we invite members of these communities to join for a two day workshop to discuss lessons learned from live operations as well as future plans. Besides reviewing the current status of the field, a main goal will be to ensure that follow-up facilities, tools, data formats and policies are all developed according to our needs and at a pace such that the new data streams are optimally used.