I've downloaded a trial of PatternMaker and just started working with it.
I've been working with PatternMaster by Wild Ginger.
I would like to ungroup a pattern piece so I can start editing, but what I'm doing is not working.

Can anyone give me a basic instruction?

I can choose the ungroup icon. Then select a pattern piece and right click for "done selecting".

From there, nothing happens.

Gloria,
It is not necessary to ungroup a pattern to be able to edit it. You can move, delete, rotate points in a group.
You can not move for instance the text in a grouped pattern.
You can also cut and rotate a group.
When you want to cut a pattern which is grouped it ungroups automatically after the cut. Because one piece(object) is cut into 2 pieces(objects)

When you ungroup nothing visible actually happens.
You select Ungroup with LM, then select the group with LM and clik RM to say you are done selecting. Then the command is ready and the objects are ungrouped. But you see no difference.
You can check this by selecting Move. Then you can select a seperate object of the group , it is highlighted (when it was grouped you can only select the whole group). And you move for instance the text or the dart in the pattern piece.

Eugenie

Thank you for your prompt reply!
I am working with the fitting bodice since I only have the 3 basic free macros in this trial.
I am trying to change the round neckline to a V.

When I choose ungroup the only objects that separate are the main pattern piece and the offset seam line piece. They are the only pieces that move.
I want to place the cutting line for a V neckline and remove the rounded neckline.
I thought maybe I could select between vortexes, but I can't seem to do that.

To make V neckline you do not need to cut.Do the following:
First use a black background. Then you can see much better the vertices. Go to menu Setting/default settings and select More or extensive at the bottom to see all options.
At the right side select black bacground this means uncheck white background.
Also check Show vertices(points).
Then select Apply and Ok.
Now you have a black background and by default you will see always all points of an object.

In the bodice you see blue and green points(vertices). Blue are beginning and endpoints of segments, green are curve points. The green points are not on the pattern lines itselves but off. When the curve point is farther away from the pattern then the curve is very round.
By editing those points you can change a pattern. You can add, move, erase, rotate, align points.
In the neck line you see a green curvepoint.
You can move this point somewhat with Point/move point and you will see the curve changing. You can make the curve rounder or less curved.
When you delete the point you will get a V line, a straight line between shoulder-neck point and mid front point.
So go to the menu Point/delete point (or erase point i am not sure. I am using the dutch PM) and delete the curve point.
Select Delete point LM(left mouse click)
The select the curve point with LM and accept the selection(done selecting) with RM (right mouse). Then the point is gone and your neck line has changed.

It is important to read all the time your command bar ( with a double click at the bar it moves up under the statusbar. Then it is better readable).
Do not click at random but only when you answer a question of the program otherwise you are giving answers without knowing.
The last question is the one you have to answer. A command consists of a couple of questions.
Eugenie

Thank you so much for your reply.
I keep working on things and have been happy with my progress yesterday.
I'm multi-tasking on my learning regarding this program.
I had it many, many years ago. Probably near when it first came out.
Yesterday I downloaded WinTopo and was delighted to be able to convert a full pattern drawing from another program into a bmp file and then convert it to dxf and import it into PatternMaker.
A eureka moment!
I'm totally confused about grading, but hopefully, I'll figure it out.