How do you index your portfolio in your mind?

[Huthaifa Afanah]

Hi all, 

As a landlord who have multiple units and rent them: how do you usually index or organize your units? How do you arrange the whole portfolio (renting, expenses, income, maintenance) issues in your mind now? Are you indexing it per unit? Or per lease?

Do you navigate data -in your mind- by units or leases?

Thanks in advance