Vegas allows you to save several fx keyframes as a plug-in chain, but unfortunately, you can not save multiple Pan/Crop keyframes as a preset (similar to plug-in chains). Only one Pan/Crop keyframe can be saved as a preset. So, you can not do it in Vegas without extra tools, such as Pan/Crop Assistant, which allows you to save all Pan/Crop settings of a selected event (including all keyframes and animations) as a custom preset that can be re-used for other projects.