While creating an opportunity (or editing) you have to choose topics. 
Topics are attributes you add to your project in order to define to which field of study they belong. Topics are used to refine the search for your opportunity and can be added to email notifications. 

Be sure you add the right topics to your opportunity. If you wish to add more than one because your project has multiple disciplines, just add all of the topics you wish to add. 


Choose topics


You might choose several topics from the hierarchical tree. To select a topic on any level click on the red text. 

To expand a topic click on the triangle-symbol on the left instead. 

Selected topics will be added at the bottom to “Your selection” and can be removed by the red cross besides the selected topics.


If you are not familiar with the taxonomy used you can also search for a certain topic using a keyword.