Stair Stringer Modification

[PhilvK]

Please see the sketch below. I need to extend the end of Stringer A down to the line at ‘C’ so it matches the length of Stringer ‘B”.  Even after converting the stair to ‘sketch’, I can’t seem to get the stringer isolated to edit its path. I’ve done this before, and even have old and similar posts, but I haven’t been able to repeat my actions. Can anyone please help?

[PhilvK]

As a follow up to my previous post, does anyone know of video that explains how to use the ‘Support’ button when working with stairs?

[ToanDN · Accepted solution]

Similar thread.

[PhilvK]

Thank you ToanTN. The 'similar post' answered my question about extending the stringer, but do you know where I can learn where and how to use the Support portion of the Stair creation options? See my post from 12-2-16 10:56 am above.

[ToanDN]

I think the tool is there so that if you delete a stringer then you have the ability to put one back. If you hover your mouse over the icon it tells you how to use the tool.