Difference between control budget and project budget

Summary:

When we enable budgetary control for Projects module and load the control budget using ADFDI or FBDI, wouldnt those control budgets be applicable to PPM relevant areas and associated transactions which will do the fund check and reservation?

or

In addition to the Control budgets, Do we need to load a separate budgets exclusively in PPM module for fund check and reservation?

Any pointers to the different bugets and the purpose of the usage would be helpful.

Content (please ensure you mask any confidential information):

When we enable budgetary control for Projects module and load the control budget using ADFDI or FBDI, wouldnt those control budgets be applicable to PPM relevant areas and associated transactions which will do the fund check and reservation?