Absolute End Date Not to Change / Critical Paths on Grid View

edited 12/09/19 in Smartsheet Basics

I am trying to figure out how to sent an absolute end date to my project & then if any predecessors take longer than the original duration, & now the overall project timeline can't meet that date, it doesn't change the absolute end date....if makes you less duration of remaining tasks.

Also, how do I see critical path "tasks" on the grid view?