Firstly, welcome to the neighborhood.

While I am not sure about the 8/8 time signature, you can achieve more than 4 chords within the bar using micro-chords (presuming that you have a recent version of BIAB).

With 4/4 though, you would separate the first two chords with a comma in the left hand part of the chord cell, and the same with the right hand part of the cell for beats 3 & 4, viz:
F,C/E F/D, C


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.