We have added the capability to allow participants who have signed up for an event already to transfer into another event even if that event is full. Caution on using this option because runners might sign up for your Half Marathon to get into your full Marathon.
We also allow for Events to be linked together for the purpose of doing caps. For example you might want to have a wave race start with two different distances (a 5K and a 10K).
We now give you an option to allow a person in one event to transfer to the other event within that cap. You can set this up as an option in the Participant Transfer Setup page of your race dashboard as shown below (second checkbox). The first checkbox will allow for participants to transfer into any event even if they are full.