Designer is a vague term which usually implies the task of creating or of being creative in a particular area of expertise. Often times it is used to reference someone who draws or in some ways uses visual cues to organize their work.
... members pursued various solo projects, most notably Bob Weir[?]'s Ratdog[?] and Phil Lesh and Friends[?]. The surviving members of the Dead fully reunited in mid-2002 as ...