[Excerpt] Planning and organizing a conference, a meeting or any other event is a complex task, often involving numerous different people. The objective should always be to make the event as beneficial as possible for all participants. Increasingly, also people with intellectual disabilities actively participate in events together with many other participants. This shows the growing inclusion of this group of people in our societies and should be much more promoted. Of course, these participants are often very disappointed when they cannot follow and participate in an event because some basic guidelines for accessibility have not been followed. As organizer of an event, you are in the critical position to include considerations about its accessibility from the beginning of the planning process. Taking care of these issues from the beginning has proven to be most effective and avoids costly changes to programmes and venues.