I am currently involved in the following Conference organizations:

• 43rd Nordwestdeutsches Funktionalanalysis-Kolloquium, July 13, 2024 in Paderborn
• 60th Meeting of the  "Seminar Sophus Lie", September 16.-19. 2024, Paderborn

Recently co-organized conferences:

• Processes and heat kernels with symmetries, Angers, June 26-30, 2023
  (I was a member of the scientific committee)
• 16th OPSFA (International symposium on orthogonal polynomials,  special functions and applications), CRM Montreal, June 13-17, 2022, online. Main organizer: Luc Vinet, Montreal.
• Mini symposium on "multivariable special functions and representation theory", coorganized with E. Koelink and J.-F. van Diejen,  within the OPSFA-16
• Modern Analysis related to root systems with applications, coorganized with  J.-P. Anker, P. Graczyk, P. Sawyer.  CIRM (Luminy), hybrid, October 18-22, 2021.

Some further meetings: 

• IWOTA 2024 (35th International Workshop on Operator Theory and its Applications), University of Kent, August 12-16, 2024. Among others, there is a session on orthogonal polynomials and special functions organized by Jacob Christiansen and Ana Loureiro.
• Conference Representation Theory and Probability (in honor of Grigory Olshanski), Leipzig, September 23-27, 2024.
• Auftakt-Konferenz des SFB-TRR 358, "Integral structures in geometry and representation theory",  Sept. 09-13, 2024, Paderborn.
• OPSFA summer school, Radboud University Nijmegen, 8 - 12 August, 2022.
  I gave a lecture course on multivariable hypergeometric functions and related harmonic anlaysis. 
• Noncommutative Conference, Analysis and PDE Center, Ghent University, August 18-20, 2020 (online)
• Hypergeometry, Integrability and Lie theory, Lorentz Center Leiden, December 7-11, 2020 (online)

Conferences (co-)organized:

• Symmetries in Geometry, Analysis and Spectral Theory,  Paderborn, 23.-27. July 2018, on occasion of Joachim Hilgert's 60th Birthday
• GDMV 2018, Paderborn, 5th-9th March 2018
  Joint meeting of the Deutsche Mathematiker-Vereinigung (DMV) and the Gesellschaft für Didaktik der Mathematik (GDM).
• Dunkl Operators, Special Functions and Harmonic Analysis, Paderborn, 8th-12th August 2016
  Confernece occasion of Charles F. Dunkl's 75th birthday
• Section with the topic "Harmonic analysis, orthogonal expansions and Dunkl theory" as part of the DMV-PTM meeting 2014, Poznan.
• 46th Seminar Sophus Lie, Paderborn, January 10--11, 2014
• Conference "Harmonic Analysis, Convolution Algebras, and Special Functions", TU München, 10th-14th September 2012
• Workshop "Harmonic Analysis", TU Clausthal, 2.-3. November 2010.

Other:

• Mini-Workshop on "Dunkl operators and Bessel processes", TU Dortmund, January 17, 2020
• OPSFA 15, Linz, July 22-26, 2019
• UMI-SIMAI-PTM joint meeting, Wroclaw, September 17-20, 2018
• Probabilistic aspects of Harmonic Analysis, Bedlewo,  May 6-12, 2018
• FoCM 2017, Barcelona, 10th-19th July 2017;
  Workshop C7: Special Functions and Orthogonal Polynomials
• 14th OPSFA (Orthogonal Polynomials, Special Fucntions and Applications); Kent, 3th-7th July 2017 (plenary talk)