Enter deadline dates right after the task name and/or project name. There, they advise but do not control you, like this:

   Factory Proposal (4/30) / Verify funding (4/23)

The “Verify funding” step has a hard deadline of 4/23 or the final project deadline (4/30) will be missed. Often, you only have a project deadline:

   Valentines Day (2/14) / Decide on gift for Liz