Mr Beckwith said he had completed some training regarding safety and taking care of clients in and around swimming pools and said he did not have any difficulties communicating with Mr Parker.
"Harry dived to the bottom of the pool and brought him up, he had his arms underneath Michael and brought him along to a shallow bit in the pool and that's when the lifeguard jumped in as well and he was just lying in Harry's arms flat with just his head moving," she told the inquest.
An inquest heard from support worker Harry Beckwith - who was also on the trip - that Mr Parker was "jumping in and out" of a swimming pool on the day of the incident and he decided to "jump in with him".
He added that he and Mr Parker had jumped into the pool the day prior and were not told they could not do so - and that he had not received any lifeguard training or specific training regarding individuals with Down's syndrome.
The worker said Mr Parker jumped "to his left" and added: "I jumped to the right trying to miss him but somehow he had gone underneath me and I landed on him.".