Ventilation fan rules advise/help needed

[iEnam]

Hi all,
I just wanted a second opinion on the rules below, for example, if they can be combined or done in a more efficient way etc.
Note that I’ve just created rule no.4 and not fully tested, so any comments or advise on the rule will be appreciated.
EDIT: created rule no.4 as humidity readings can be a bit slow to update, so want the boost mode to be on if someone is in the shower regardless of the humidity level.

1. Boost mode (extract fan for bathroom + kitchen) – ON if humidify >=65%

2. Day mode (medium ventilation) - turn OFF ventilation system if humidity <=55% (6am-10.30pm)

3. Night mode (noise off!) - turn OFF ventilation system if humidity <=60% (10.30pm-6.00am)

4. Shower mode – turn ON ventilation system (if off) plus boost mode ON - if shower is in use

Thanks for your help.