Problem with adding custom rules

[Keith-And-Tasha0]

I have a continual 2-night minimum stay.  I would like to occasionally override this and allow a 1-night stay.  When I try to add this custom rule I am allowed to do so.  Then, when I refresh the rule is no longer listed.  I have no idea if the rule is actually applied but I doubt it is.  

Can anyone help me with this? 

[Emiel1]

@Keith-And-Tasha0 

Did you create the rule in the menu "availibility" (and also saved it) or did you create a ruleset in the multicalender (if available) ?

You can test on your listing if the rule is applied (simulate a booking..)