Make and Pro, need to try pro but cannot find it

I have just downloaded Sketchup Make, which comes with 30 days free trial use of Pro. How do I use Pro to try it out? Thanks.

You will be using Pro for the 30 days.

It says Sketchup Make in the about box, but thanks for reply.

and it told you it was giving you 30 days free trial of pro, so …

You read those hints?