You can reuse a project as template for future projects.

You simply select "Use Template" when creating a new project, select the project you want to reuse as template from the dropdown, name the project, set the start date, and select the elements you would like to be copied over to new project are i.e. holiday calendar, Assignee, logo and cover photo.

Please note that description, working week, custom unit, scheduling mode and tag are copied by default.