"one on one help" is correct and usable in written English.
You can use it to refer to a situation in which one person is providing assistance to another person, either in person or remotely. For example, "We offer free one on one help for people who need assistance using our software."
During a recent day at Austin High School, students got a heavy dose of one-on-one help.
Perhaps most crucially, every new teacher gets an instructional coach who provides one-on-one help, often for as long as two years.
The adults will sit with the students in the classroom and work under the supervision of the teachers, often providing one-on-one help.
Poly Prep Country Day School raised $2 million to open a learning center this year that has six full-time employees offering one-on-one help with subjects as varied as note-taking and test-taking.
Catching sight of her, a therapist assumed the woman was a stranger, one of the hundreds of Port Authority employees who had shown up for one-on-one help since they'd fled Tower 1 on Sept. 11.
With many services to choose from — including www.SmarThinking.com (where specialists in nearly two dozen subjects offer one-on-one help during specific hours on a given day) and www.TutorVista.com (where customers book ahead 45-minutes sessions with tutors based in offshore call centers) — I opted for the convenience of www.Tutor.com.
In practical, lab-based sessions, this often needs one-on-one help from teaching staff.
It offers everything from courses for budding entrepreneurs to one-on-one help for people in your position.
It's worth noting that Amazon's AWS unit also runs a similar space on Market Street in San Francisco where it, too, offers training and one-on-one help.
Similar to the experience in June, developers will be able to go to "The Loft" (not to be confused with LOFT) to get one-on-one help from AWS experts, as well as to learn about AWS through product sessions and to attend instructor-led technical bootcamps at the venue.
