The way the Daily Serum Dosage serum business policy works now is it unlocks a new Duty which can be assigned to an employee with Set Her Work Duties. If she's not full on duties choose Daily Serum Dose from the list on the left, Add Duty, and then Return. That will cause her to begin taking her department's assigned daily serum every Morning. If the employee is already full on assigned duties, choose one (or more) that you want to remove, choose Remove Duty and then Return and that will flag those duties to be removed at day change. The next day you can assign new Duties, and if Daily Serum Dose is one of them she'll begin taking her dose on the *next* workday after thatBUG REPORT
I think I found a bug in the game.
Even if you set the serum for a department (doesn't matter all depertments of a single department), the employees do not take the set serum.
Attached is a save showcasing that.
Yes I did cheat clariy and money. Everything is as base.
I did load your save and that appears to be what's going on in your game. When I assigned the Daily Serum Dose duty to a few of your employees they began taking their dose of "office1" the next day