You need to apply it into pressure and give a negative sign for tensile and a positive for compressive loads. As pressure is a form of compression.

good evening

I would like to change the direction and not the sign

for example, my pressure is along the Z axis and I would like to apply along the Y axis

What should I do?

A thin plate under tension

as shown in the picture

Honestly speaking, the term "partially distributed load" in our question sounds unclear.

I try two answers. As far as I know, the type of load that can be applied depends on the element type. For example, plane elements (e.g. PLANE182) support only pressures normal to the element surface. Special "surface" elements are needed to also apply a shear stress on element surface.

Instead, if you want to apply a pressure only to a part of the outermost line, you need to place elements within the line edges