One doctype in two possition

can any doctype in erpnext to display in two positions?

@simigireesh, You means to say like Item Master , you want to display one doctype in two different modules ?

yes. inside my custom app I want to include project link .How is it possible?

yes. inside my custom app I want to include project link .How is it possible?

You need to create .py file in you custom app’s config folder with your app name and add code for project link.

Refer following link of Stock module and write code likewise.
https://github.com/frappe/erpnext/blob/develop/erpnext/config/stock.py