There is an informal agreement between the organizers of the Clifford sessions at the two conferences IWOTA and Group 30 which will allow participants to speak on both conferences.
* The Clifford Analysis session at IWOTA 2014 in Amsterdam is intended to be scheduled on Monday, 14th of July 2014 and Tuesday 15th of July 2014.
See also: https://gaupdate.wordpress.com/2013/10/30/iwota-2014-14-18-july-2014-university-of-amsterdam-the-netherlands/
* The Clifford Analysis session at Group 30 in Ghent is intended to scheduled on Thursday, 17th of July 2014 and Friday, 18th of July 2014.
See also: https://gaupdate.wordpress.com/2013/10/01/30th-international-colloquium-on-group-theoretical-methods-in-physics-first-circular/
Also Amsterdam and Ghent are quite near to each other (train travel of 2.5 or 3.5 hours) which allows easy movement.
Source: Emails from F. Brackx (Ghent) fb_AT_cage.ugent.be, U. Kaehler (Aveiro) ukaehler_AT_ua.pt of 06 Nov. 2013