"new module" menu greyed out

[RudolfM001]

Hi everyone,

I'm very new to Studio 5000 software.

running v26.01 on 7 day license.

Made new project with 4 slot chassis and 1756-L71 CPU.

Want to add ethernet comms module onto rack.

Adding module option under I/O configuration is greyed out.

Why?

Thanks.

[purwanto]

the software RS Logix 5000 need lisence. Trial 7 day just for online monitoring,