Link back to original Deal/Potential from Zoho Projects

Link back to original Deal/Potential from Zoho Projects

I am unable to link back to the original Deal/Potential when I create a Project and would like to know how to do that. 

I believe this is a fundamental of CRM - how else can the Project Team know contact / company details if they cannot link back to the original Potential/Deal and Lead via CRM  ?

Looking forward to a favourable response