In latest version of odoo which is 19.0, there is major update on project configurations which are moved to project settings tab in odoo's project app.
Following configurations were available in odoo 18.0 version in Project --> Configuration --> Settings
1) Recurring Tasks
Auto-generate tasks for regular activities
2) Task Dependencies
Determine the order in which to perform tasks
3) Milestones
Track major progress points that must be reached to achieve success
In Odoo 18
In 19.0 you can see those 3 configurations in Project --> Settings --> Task Management tab: refer image
In Odoo 19
Where is Milestones, Task Dependencies, Recurring Tasks options in odoo 19?