First issue..don't know
Second one on Supporting Details (SD)?
That one is going away (the rt-click) as various sections are rewritten with more modern code...but I don't konw why they can't re-implement it.
Sometimes, if a field already contains an SD, a double-click will work.
IF not that, you click once in the field, then go to the top menu,
.....under the Edit dropdown , and select, "Add Supporting Details"
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In Forms Mode, the rt-click still works ..IF....the field is an editable one.
____________*Answers are correct to the best of my knowledge when posted, but should not be considered to be legal or official tax advice.*