It depends on the kind of help they ask for. Teams can ask employees to describe what an item can be used for or to describe the different characteristics of several versions of the same thing, such as uses of different kinds of glue or different kinds of paint. Teams should not ask a store employee to recommend something to do a particular job in the team’s solution; that would be outside assistance. It is the team’s responsibility (and right) to choose exactly what they want to use in their solution.
In regards to wood, if the team determines the exact cuts, then it is okay to have a store employee make those same cuts for the team that anyone else could request. However, if the store charges an extra fee for those cuts, that fee must be included on the Cost form. There is a fine line between generic cuts and having the store employee help produce your set. The team could consider sending a clarification request with the dimensions to CCI if still unsure.