How do I pick the computer my automation runs from

I recommend if you are going to consistently use different computers you give each one their own login and access to the workspace. The reason is because when one computer logs into the same account as another, it becomes the "primary" which means we can't send any events to the other computer anymore until it logs back in.

When an automation is told to run this is the logic in the most simple form

Is the automation locked? Can only run from the locked users system (locked to account, not system)

Is the automation creator online? Run from their system

If not, find another active workspace member to run from

So, to make automation 1 runs from computer 1 and automation 2 runs from computer 2 you can have this

account@account.com creates and locks an automation named "automation one"

Invite account+2@account.com to your workspace and create "automation two"

Now, when automation one should run runs it will only the computer logged into account@account.com and automation two will run from account+2@account.com