Hi @Andrew Mikels ,
Based on my test, at present we can only type text in the Location field when scheduling a teams meeting in either Teams for iOS or Teams for Android.
Given this, as a workaround, I'd recommend manually typing the meeting room's name in the Location field and adding the room as a participant at the same time.
Meanwhile, I tried submitting this via the dedicated feedback portal for Microsoft Teams and you can also add your vote or comment there:
Teams for iOS or Android: Allow meeting rooms to be searched in the “Location” field
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