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