How Do I Open My R&D Lab After Declining First?

So… I trained up a design specialist and all that and was all set to open up my R&D Lab, and when the dialogue came up, I accidentally clicked “not yet”. How do I start the R&D Lab after the dialogue prompt comes up and you decline? I’ve looked everywhere I can think of, and I can’t figure it out.

You’ll get asked again in a year.

Ah, okay. Hoped that was the case, but I just loaded a save from about 20 minutes earlier and accepted when he offered again.