The phrase "attendees selected" is correct and usable in written English.
It can be used when referring to individuals who have been chosen or picked to participate in an event or activity.
Example: "The attendees selected for the conference will receive an email with further details."
Alternatives: "chosen participants" or "selected guests".
Award ceremony attendees selected Ian Turnage-Butterbaugh's image of a placid ocean to receive the People's Choice Award.
This conference is an attempt to provide some balance, but they only had room for 140 or 150 attendees (selected from more than 500 applicants from a number of schools).
The festival attendees selected "Here Alone," directed by Rod Blackhurst, as the narrative winner and "The Return," directed by Kelly Duane de la Vega and Katie Galloway, as the documentary winner.
Data on a sample of family medicine practice attendees selected across the country was separately collected in two stages.
Due to space limitations, attendees are selected based on a simple application process, and will be accepting applicants on a rolling basis.
In the sentinel surveillance, leftover blood samples were collected from a smaller number of ANC attendees from selected facilities, often for a period of 3 months biennially.
The twenty-eight attendees were selected among individuals who had previously participated in a Youth Development programme with the NGO, based on a review of their CVs and the NGO's feedback.
RSVP info: This is a free event, but attendees must select a performance and reserve tickets.
At a dinner Thursday, the trade publication Advertising Age asked attendees to select the winner of a new honor, the Chief Marketing Officer Choice Award.
It may be interesting to see which of the two smartwatches attendees initially select: the LG or the Samsung.
The first event, held at a Palo Alto bar in late 2009, attracted several dozen carefully selected attendees.
