She did this my without permission, official agreement or notice.I found this all out after the Main Tenant texted me saying they did not agree to it with me. 

Having a lease agreement in place is incredibly important.

Hi Kiran, It's advisable to seek legal and financial advice when structuring the partnership and drafting any relevant agreements.

I am getting started in rental property investing as drawing my first set of lease agreements currently.

I suggest you speak to an eviction attorney and get a Estopple agreement from current tenants. 

The notice period may vary depending on your lease agreement, but it's typically 30 days.

Where do I get the agreement document? 

He stated I am annoying him because he broke the lease agreement and I brought it to his attention.

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But they should give notice. https://caretaker.com/learn/lease-agreements/month-to-month-...