In the context of Indian Oil PSUs, acting allowance is usually provided to employees temporarily performing duties at a higher level or grade. As per the prevailing norms, acting allowances are generally considered a part of remuneration, not a cafeteria benefit.
Cafeteria benefits, also known as flexible benefits, are a type of employee benefit plan that allows employees to choose from a variety of pre-tax benefits. They are usually non-monetary and include benefits like health insurance, retirement benefits, etc.
However, since organizations have the flexibility to structure their compensation packages, it may be possible to include the acting allowance as part of the cafeteria benefits, provided it adheres to the company's policy and is in line with the relevant labor laws.
For a precise understanding, I would recommend referring to the company's specific HR policies or consulting with the HR department. Also, make sure to cross-check with the local labor laws and tax implications before making any changes.