3 fact tables are there how to make them link in data model by implementation of star

[#1]

3 fact tables are there how to make them link in data model by implementation of star

[#2]

You can combine all the fact table by using the appropriate business logic (concatenate or joins) and then linking it by using the dimensional table

[#3]

Go for concatenation or join  based on ur ER diagaram or business logic

or

concatenate or join any 2 fact tables and create a link table between result of above 2 tables and remain table