How do I install the free license in MSP?

How do I install the free license in MSP?

I would like to evaluate the options available with the free license of MSP, I have the license key but can't find where to install the key.

There isn't an option in the top right corner of the screen as suggested in the instructions.

Do I need to wait 30 days before the eval period for the full software to elapse before I can install it?

                New to ADSelfService Plus?