The phrase "assisting at" is correct and usable in written English.
It can be used when referring to helping or supporting someone in a specific role or event.
Example: "She was assisting at the charity event, ensuring everything ran smoothly."
Alternatives: "helping with" or "aiding in".
Editorial assisting at royalty-friendly Vanity Fair would serve nicely.
By nightfall, he was back assisting at a chapel service.
The results are dire, as Dorkenoo discovered as a young London nurse, assisting at an infibulated woman's excruciating labor and childbirth.
Father Hickey was assisting at St. Helen Parish in Norwell, and Father Buntel was the business manager at St. Thomas of Villanova Parish in Wilmington.
I became interested in midwifery after I started volunteering at the charity MRANG, assisting at the births of refugees and asylum seekers on Merseyside.
"A huge amount of people have volunteered to do jobs they don't normally do, from working in terminals to assisting at call centres.
(Sept . 17 3. WINNING AGAINST Hopelessness The former N.F.L. player Roynell Young has been assisting at-risk young people since the end of his football career.
There is little evidence regarding the effectiveness of targeted remediation programs for assisting at-risk students in achieving academic success.
This analysis strongly supports the belief that the remediation was effective in assisting at-risk students with academic success.
Mr. Berman founded and serves as the Chairman of the Board of Trustees of the Project Dream Foundation, which is a charitable organization that is geared towards assisting at-risk youths and individuals overcoming adversity.
Adolescents who indicated current psychological distress, in the context of a negative outlook for the future and a suicide attempt within the last 12 months were identified to the school principal or school psychologist, who then implemented their schools' procedures for assisting at-risk students.
