Free duty roster software

[Florian Schweikert]

Hi,

my girlfriend is looking for a software to create a clinic duty roster.
The requirements are quite "standard", one doctor for early and one for 
late-shift per day (Mo-Fr).
Also it is required (at least highly encouraged) that the MD doing the 
late-shift also does the early-shift the next (working) day.

Does anybody has a recommendation for a free roster software that is 
suitable?

I'm about to checkout optaweb-employee-rostering, anyone has experience 
with it?

Thanks,
Florian