Julian Meetings vary and are free to do things in their own way. A brief reading, not necessarily from Scripture, and/or a short piece of music leads into a period of silent contemplative prayer. The leader will signal the end of the silence with another short reading and/or music.
The main requirement for a Julian Meeting is that there should be a substantial period of silence. The most usual length is 30 minutes. It should not be less than 20 minutes and can be as long as the meeting decides. This is not interrupted in any way.
At the end of the silence there is usually a time for tea and coffee and conversation for those who want this.