How Would You Draft a Letter for New Manager Benefits Like Fuel Reimbursement?

Hi all, I'm working as an HR Executive at a private company. We are planning to introduce a new benefit for some managers as follows:

1. Fuel reimbursement up to $100 per month.
2. Mobile phone bill reimbursement up to $5 per month.

I need your help to draft a letter for this increase in benefits. Please assist.

Regards, Irosh

Anyone can help? I need a sample of a Fuel Reimbursement Policy/Procedure or a Letter. They have a limit of up to $100 per month and need to provide bills by the end of the month.

I hope this helps! Let me know if you need any further assistance.