u/Freefly79

As an absolute beginner in CAD I kindly ask for your help.

here is my project:
https://cad.onshape.com/documents/22bfac20c8ee2d0e94b8ead6/w/f9780c03cb81694127ef6723/e/565fb1b664431193571ecd4e?renderMode=0&uiState=6a04dabf76a0e4c598bba2a2

I want to distrubute in total 19 holes along the surface from the left over the top to the right. the holes must be directed in 90° to the surface.

Thank you