How to plot holes along a curved surface

Without a drawing, as a rough guess, align X0 Y0 Z0, and then rotate the alignment (type in numbers in the rotate section of the alignment dialogue) and offset it if necessary to make the hole in-line with the working alignment.
Measure the hole.
Call whatever alignment you need to do your output.
Output the dimensions you need.

This is technically what you are supposed to do with GD&T, by the way. You zero what is in the control frame ( | A | B | C | ) or whatever, then translate and rotate the basic dimensions as given on the print so that the feature is theoretically at X0 Y0 Z0 I0 J0 K1 (the IJK can be anything you want, so long as one of the three is 1 and the other two are 0), then inspect the actual feature and compare it against perfect zero.

In the hole dialogue, you can click the button to define holes in Polar rather than Cartesian, so you define an angle (in your workplane), a radius away from your origin and a height from your origin. You can adjust the ijk if this is a compound angle hole.
I personally hate this, I have almost ZERO experience using polar, so I don't think that way. I much prefer trig and Cartesian. But I have done it, and it can be done if you need it.

Without a drawing, as a rough guess, align X0 Y0 Z0, and then rotate the alignment (type in numbers in the rotate section of the alignment dialogue) and offset it if necessary to make the hole in-line with the working alignment.
Measure the hole.
Call whatever alignment you need to do your output.
Output the dimensions you need.

This is technically what you are supposed to do with GD&T, by the way. You zero what is in the control frame ( | A | B | C | ) or whatever, then translate and rotate the basic dimensions as given on the print so that the feature is theoretically at X0 Y0 Z0 I0 J0 K1 (the IJK can be anything you want, so long as one of the three is 1 and the other two are 0), then inspect the actual feature and compare it against perfect zero.

In the hole dialogue, you can click the button to define holes in Polar rather than Cartesian, so you define an angle (in your workplane), a radius away from your origin and a height from your origin. You can adjust the ijk if this is a compound angle hole.
I personally hate this, I have almost ZERO experience using polar, so I don't think that way. I much prefer trig and Cartesian. But I have done it, and it can be done if you need it.