here ya go...good luckhttps://www.extendoffice.com/documents/excel/4233-excel-stack-columns.html

I needed her to sign some documents the management asked me to do and she will ignore me.

Ultimately all depends on how much you can hold, longer term nothing will beat bay area not even all the cashflows people talk about in BP, history is an indicator of it, refer to Dan's responses in above thread.

Credit Score is about 650 for each of the couple. 90k revolving credit card debt..with utilization > 95%.However rental history is good.

People respect knowledge.) experience (If you have a history of completing deals successfully, either for your clients or yourself, experience is very helpful to share. 

And they will add Wire fraud, filing false documents, tax fraud (when you take the tax write offs) and impersonating an intelligent human being.

Since I only have a year of rental history, how should I be calculating my DTI?

If you put in an offer, add a contingency to look at the HOA documents.

I want to have clean documentation so the people renting know the rules and I have something to fall back on when I question is brought up. 

Repair Estimation/Budgeting - Ability to create detailed Scopes of Work & repair costs budgetsBudget Tracking - Ability to track your actual expenses against your initial budgetScheduling - Ability to create a project plan & track project progressChecklists/To Dos - Ability to track daily to-dos and checklists of items that need to be completedCalendars - Ideally all of your Schedules & To-Dos feed into a Calendar that you can use to manage all of your projects in one location.Document Management - Place to store project documents and photosHere are some Project Management tools that you might consider: Trello/Asana/Zoho Projects/Basecamp - General project management software that includes tasks, Gantt scheduling, calendars, project forums, document storage & team collaboration tools.