Data entry fields, requirements, and entry types for insertion anlaysis. Components that are added but not secured are typically parts which are free to move until constrained. If you were to turn the mouse right side up without the trackball cover, the ball would simply fall out. Components that are secured immediately and secured after assembly require a securing operation to be specified. Insertion access is either easy, hard, or extremely difficult.
Insertion time is increased if the access to the insertion point is difficult to reach or see.
As with handling characteristic specifications, if vision or reach is difficult for the average person, chances are it will be difficult for the worker who performs the task day in and day out. Holding requirements are determined by reassembling the part. Alignment difficulties are determined by reassembling the part. Insertion resistance is also a judgement call. With experience, you can determine what kind of resistance significantly affects assembly time of a product.