MS Teams - Privacy option missing when creating Channel

[Canters]

Like many others, I'm scrambling to get Teams set up.I'm trying to add a new channel within my Governors team but the 'Create a channel...' popup is missing the 'Privacy' options. This means it just brings all the members in from the Governors team, and then doesn't allow me to edit them as required. I presume this missing 'Privacy' option is as a result of some setting in the Teams Admin Centre that I can't find despite spending all morning trawling the net for help.Can anyone point me in the right direction to solve this please?

[Canters]

Ok...may have solved it myself. If I have, this may help others?

 

Earlier I found a setting in the Teams Admin > Teams policies > Global (Org wide default) > Create private channels. This was defaulted to 'Off'. I changed it first thing this morning to 'On' and it had no effect. However, I've just tried to create a new channel again and the 'Privacy' option is now there. I presume there is a lag on any changes you make in Teams Admin that I wasn't aware of?