In the Sequence or Primer Design view, click on the Translations and ORFs tool () and make a selection from the Reading Frame sub-menu.
Right-click on it and choose Hide Translation Strand.
In the Sequence view, click on the Translations and ORFs tool () and choose Create Translation. Type a name and press OK.
To control the display and numbering of the translation, use the Translations table located in the Settings panel.
Choose Sequence > Translation Display > Three Letter Code or Sequence > Translation Display > One Letter Code.
See the topics Choose the genetic code and Modify the genetic code.
See Create a New Sequence.