As an ACCA you must complete your practical experience requirement to become a member. This is similar to an articleship with ICAI however there are 2 key differences.
Firstly you must achieve 9 clearly stated objectives during the 36 months of your practical training and these objectives must be appraised/verified by your practical experience supervisor. You must inform your employer about this requirement if the employer is not ACCA approved. The supervisor must agree to verify your objectives. Every time you update your practical experience requirement module, your chosen supervisor gets an email. He will then verify whether you have actually achieved that objective.
You need to achieve both the time frame as well as verification of all objectives to complete this module.
To become an ACCA member you must complete all the papers, the professional ethics module as well as the practical experience requirement.
Hope this helps. Happy to answer any more questions.