Glyphs mini creating alternative glyph

Hello,
Is it possible to create alternative glyph to main glyph in Gyphs mini? How it can be named and how to use in Photoshop for instance?

Thank you

Glyphs Mini offers automatic OpenType feature generation for localized forms (locl), fractions (frac), ordinals (ordn), discretionary (dlig) and standard ligatures (liga). Add the feature tag to the end of a glyph name with a dot (for example: c_k.dlig). Other automatic and full manual features are available in Glyphs.

Thank you