To begin installation the ScreenSteps for Salesforce application please visit the App Exchange:
https://appexchange.salesforce.com/listingDetail?listingId=a0N3000000B50kpEAB
Get It Now
Click on the Get It Now button. You can then choose to install in production or sandbox.
Confirm and install
Click Continue
A screen similar to this should appear after you login. The only real difference you may see is the version name/number and the description.
Click Continue.
Click Next
Choose Security Level
Use the default security settings (admin only) and click Next.
Install
Click the Install button.
Success!
After a few moments you should see a screen similar to this. At this point the installation is complete and you can move on to configuration.
Andrew Nilsen
When I installed version 1.23 step 2 "Choose Security Level" was not a part of the installation. It skipped right to "Install" and was label Step 2 of 2. Not sure if this is something that is new with version 1.23, or it is something unique to my installation.
Blue Mango
@Andrew - I think that since you were updating an existing installation you weren't asked again as you had already assigned permissions the first time around.