If you choose monthly payments, here is a helpful guide:
1 year = 12 monthly installments
2 years = 24 monthly installments
3 years = 36 monthly installments
4 years = 48 monthly installments
5 years = 60 monthly installments

If you choose quarterly payments:
1 year = 4 quarterly installments
2 years = 8 quarterly installments
3 years = 12 quarterly installments
4 years = 16 quarterly installments
5 years = 20 quarterly installments

If you choose annual payments:
1 year = 1 annual installment
2 years = 2 annual installments
3 years = 3 annual installments
4 years = 4 annual installments
5 years = 5 annual installments