New Business Commission Structure

I collaborate with four sourcing consultants and one 360 recruitment consultant. The 360 consultant is newly onboarded and has begun engaging in business development activities. She has expressed that when she acquires new business but is unable to fill those positions herself, the responsibility then shifts to the sourcing consultant. She believes that in such cases, a commission split of 30% for her and 70% for the sourcing consultant is appropriate. Furthermore, she feels this arrangement should apply to any new business she brings in for a period of 12 months on all placements she cannot personally fulfill. Is this an appropriate approach?