For most hair projects I use a low resolution mesh. This means it is possible to adjust the guide hairs one or two at a time,

The mesh should match the shape of the characters hairline, many of the available skullcaps are far too low down the forehead. I adjust the caps in Wings to suit the individual characters.

Split up the hair into as many separate groups as needed. Any position where adjacent guide hairs are requred to go in different directions require them to be in separate groups or Poser will interpolate between them producing a fan of unwanted hair.

For most hair do NOT run a simulation. This will totally destroy your carefully created styling. Short and mid length hair does not move much in real life anyway and for long hair, which does move and would benefit from dynamics, the collisions in Poser legacy work very poorly and in Bullet physics don't work at all.