You can specify two locations using the WHERE condition of the repeater, using the below format:
(DocumentNamePath LIKE '/MyPath1/Events/%' OR DocumentNamePath LIKE '/MyPath2/Events/%')
If you wish to make this a little easier for users, you can copy the Repeater webpart, add a "PathTwo" field to it, and modify the repeater configuration with the below code:
// Select 'all' items, since filtering by Where using path 1 and path 2
repItems.Path = "/%";
// Compile Paths
string newPath = CMS.MacroEngine.MacroContext.GlobalResolver.ResolvePath(Path);
string newPathTwo = CMS.MacroEngine.MacroContext.GlobalResolver.ResolvePath(PathTwo);
// Compile While Statement, if there is a % at the end then should handle fine.
string whileStatement = "(DocumentNamePath LIKE '" + newPath + (newPathTwo.Length > 0 ? "' OR DocumentNamePath LIKE '" + newPathTwo + "'" : "") + ")";
// If existing where condition, append it.
repItems.WhereCondition = (WhereCondition.Length > 0 ? WhereCondition + " AND " : "")+whileStatement;