Navigate to [https://localhost.prewittridge.net/p/0/system-editor](https://localhost.prewittridge.net/p/0/system-editor)

Create Requirements and Atomics - Target Orbit

Highlight the encompassing folder you will place your requirements

Press [[cmd]] + [[a]]
Type "Target Orbit [[enter]]"

Open the drawer to the right of your screen.

Give it an Apogee value of 900 kilometers.

Press [[cmd]] + [[a]]
Press [[Backspace]]
Type "Target orbit shall have an @apo [[enter]] of @ap [[down]]  [[enter]] @apo [[down]]  [[down]]  [[enter]]"
Click "SAVE"

Type "Target orbit shall have an @apo [[enter]] of @ap [[down]]  [[enter]] @apo [[down]]  [[down]]  [[enter]]"

Create Requirements and Atomics - Transfer Time

Create an Atomic for the Transfer Time
Click "ADD NEW"

Prewittridge

Working with Excel

Compute new Transfer Time using Excel and Target Orbit atomic