Issue with Project financial vs project management implementation

Summary:

Dears , We have major drawback in Project implementation :

1- we are implementing transaction control so we used project financial management

2- The client is using dependencies so we used PEM and created a work template for this purpose to add it to the financial project created .As We checked , there is no dependencies on financial part

3- We need to add the task dependencies for the financial task , but we do not have this option in financial . Major issue .

4-we are using Resource management so PEM offering should be enabled .

5- We have Gant chart in financial and I can check the dependencies on each task but could not find any .