How to finish collaboration agreement?

Me and my team got access to 3DExperience platform in order to work on a students challenge for 6 months. Now that the time has ended, we do not want to renew the collaboration agreement, we do not need the 3DExperience platform anymore. What is the procedure we have to follow?

Edu ​​​​​​​3DEXPERIENCE ​​​​​​​