We are making significant efforts that all authors can attend COLM, including by providing early registration options to start the visa process in advance and through the creation of travel grants. If no author can attend, we will allow the paper to be presented at COLM by a colleague. We believe this is not ideal, so ask to only use this option if all other options are exhausted. COLM is an in-person conference only, and all papers must be presented in person. If all the above options were truly exhausted, authors can contact the PCs to work out a solution. Before contacting the PCs, please make sure to have exhausted all other options in a timely and demonstrable manner. We will not be able to help if the authors have not demonstrated good-faith efforts to attend COLM.