When creating or editing a project, you can check the AUTO ID box.

AUTO ID
This will automatically fill in the project ID.
The format is:
{YEAR}{five-digit numerical series}
For example, 2400001
If you check Use Generated Project IDs in the Company Settings, the AUTO ID checkbox in project creation will be automatically selected. If you want to use AUTO ID, this feature helps your entire company remember to use the AUTO ID option.

Auto ID settings