Hi TB, yes HostPlus allow ,under its ChoicePlus option ,to buy...

Hi TB, yes HostPlus allow ,under its ChoicePlus option ,to buy any ASX 300 listed share, up to a Maximum 20% of your current total Super value on One share. Hence you can have max 4 shares, each at 20% value of your Super, maxing your Super invested in shares to 80%. If any share declines, you can rebuy back in as long as that buy in, totals 20% or less, and is a $1500 min, and doesn’t push your total share value over the 80% valuation of your Total Super. Any share growth beyond these % limits are yours to do whatever you choose. You do not have to sell. You can have multiple share holdings way beyond 4. But you can not purchase more shares beyond these % limits. It takes 2 full business days to move your Super units into cash/ChoicePlus, then you can personalise your own Super investing.
For all that maybe interested
Hope that helps