Adapting Plan Builder for altitude week in June

Did a quick search and didn’t find anything, but doesn’t mean there isn’t something so feel free to point me to relevant thread(s).

Have my A event in mid-August, and with a slow launch to my season I’m in the first part of SSB2 LV. Have and opportunity to spend time in CO in late June, about 4 days in Niwot/Boulder, and then another 5-6 days in Frisco and/or Fraser.

I have used PB, and wonder if there are pre-emptive changes I can make now to reflect teh time at altitude in June.

Thanks all.

Edited to add: I live in WI at 867’ elevation…