Welcome to the forums.

Yes, function key F5 is your friend.

Be aware that unfolding the song may not work for the song length you've described, as you will exceed the bar limit of BiaB. However, the way you are operating now should be fine.

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BIAB & RB2026 Win.(Audiophile), Windows 10 Pro & Windows 11, Cakewalk Bandlab, Izotope Prod.Bundle, Roland RD-1000, Synthogy Ivory, Session Keys Grand S & Electric R, Kontakt, Focusrite 18i20, KetronSD2, NS40M, Pioneer Active Monitors.