Selecting the license in the add event dialog does not work. The three main problems are:
1. The translations are not used. Instead you will see something like EVENT.LICENSE.BSD
2. Neither BSD, nor CCND or GPL specify a single license. The version etc. needs to be specified.
3. The GNU GPL and the BSD licenses are meant for software, not for media. while in theory you could still use those texts, it make no sense to use them and is possibly harmful to encourage people to use them
A sensible set of licenses to use would be: