The work of developing clinical guidelines for best practices within the RTT workflow in proton therapy is about to start. The 6^th to 7^th of February the TaSeRnet project group and a member of the ESTRO guideline commitee will meet in Denmark to discuss and decide upon the process of guideline development, publication and implementation. The guidelines will be founded on both the scoping review and the results of the Delphi Study conducted in work package 2 in the TaSeRnet project.