Nested search in a file and replace the inner search

Hi Team,

I am new to unix, please help me in this.
I have a file named properties .
The content of the file is :

##Mobile props
east.url=https://qa.east.corp.com/prop/end
west.url=https://qa.west.corp.com/prop/end
south.url=https://qa.south.corp.com/prop/end
north.url=https://qa.north.corp.com/prop/end

##Mobile full orders
service.endpoint.url=https://qenvsodrnoaenjloe/prop/jsdfh

I have two tasks to do in this file:
1) Search for qa and replace with non-qa
2) search for prop and replied with qa/prop

Can anyone please help me in this.

Is this a homework assignment?

Yes.. This is my first post.
Will keep the code as per the norms mentioned.

Thank you for reminding.

I tried this as below.

It is working:

:%s/prop/qa\/prop/g

and :%s/qa/non\-qa/g

But my doubt is, can I try with single command replacing both?