Screen shots would help.
I'd like to add a screen shot but I've no idea how to. This is my first time on the forum and it was hard enough to get the question to post!
Here are the step-by-step instructions.
I assume you already have checkboxes on your ID document. If you don't, skip to the end of this post.
Select one and then switch to the Direct Selection (white arrow) tool.
Double click the edge of the check. You will see a blue frame around the check.
Select that blue frame with the Direct Selection tool. You have just selected the frame.
Go to the Stroke controls and make it Black.
You now have an outline around the check. This is what it will look like when it is chosen.
But your boss probably wants the outline also to be around the area of the check when it is not chosen.
Keep the form selected and switch to the Normal (off) state.
Use the Selection tool to select the frame edge again and apply the stroke.
You now have outlines around each check and in the empty spaces.
BTW the purple is deceptive and depends on Acrobat's settings.
End of the post:
Just start with a frame that has a stroke and you will have one when you convert it to a form.
That's brilliant Sandee, thanks very much. It worked!!
Thanks! Always glad when something works.