why we can not add members to Teams channels which have auto-pin set to On or Off

[john john]

we have 7 channels for a Teams:

but for 6 Teams the Add members button is grey out as follow:-

so why we can not add members to Teams channels which have auto-pin set to On or Off. we can only add members to channels which have their auto-pin set to Empty??

[#2]

@john john This is a private channel, you would need to be the channel owner to add people to the channel. Being the Team Owner of the parent Team allows you to see the private channel exists, but does not allow you to see it's contents or add members.

[#3]

@Steven Collier I am the global administration.. i think the 6 teams have folders and not sites that why i can add members to them