Hello Alan,
I've attached the meshconnex setup instructions. If testing in lab/office make sure you follow these guidelines:
1 - The APs both be running on the latest recommended firmware. In your case this would be 5.9.2.6
2 - Make sure that the APs are a few feet apart
3 - Reduce the radio power to 1. Once tests done and connection established, reconfigure the power to whatever you need it to be prior to deployment
I hope this helps,
Thank you,
Chris
Christoph S.