Corporate / Business Expenses

Hi everyone.
I am interested to know how your credit union handles the following in regards to corporate/business expenses, especially those CUs that are at least $1 billion in assets.

1. What is the threshold for receipt requirement (ours is currently $25)?
2. Do you require detailed receipts for credit card purchases?
3. If yes to #2, is that a blanket requirement or do you have specific exceptions?
4. Is your expense reimbursement/corporate credit card expense process manual or electronic?
5. If electronic, do you accept phone photos of receipts? If so, do you require detail?
6. What is your CU asset size?

Thanks for your help!