@Axicee It looks like your Controller Version doesn't support setting a channel range for the AP (only setting one specific channel for the radio). You will need to update the controller version to 5.15.X.X or higher. Shown here is the UI in Controller V6. 

As for setting the channel list across the site, it doesn't seem that feature is supported. However, you can copy configurations between EAPs of the same model to help make setting up your network easier.

  @Axicee 

The access point must also support this function, for example if you have EAP225-Outdoor or EAP225 then you will not be able to select channels. If the access point does not support this function it is best to set the channels manually to avoid overlaps from other access point.

  @NeilR_M 

Could you please point me to the exact path where these settings are located?
I tried to find this section in the controller emulator, but unfortunately I wasn't able to locate it.

  @Axicee With the controller updated to the proper version, it's within the Device's Config settings (assuming your AP is compatible with it).

Device Settings > Config > Radios 

The emulator version is actually slightly behind the version I was able to confirm has the feature; I can confirm 5.15.24.21 has it for sure, assuming your AP is compatible of course.

  @MR.S 

I have more than 100 access points of the EAP245 model.
Some of them automatically select channel 100, which is prohibited for broadcasting in my country, and many client devices do not support this channel.
I need to remove this channel from the list of channels the access point can choose for broadcasting

  @Axicee 

I doubt if you can disable DFS channels on ER245, if you had you would have to go into each individual access point as well, so my suggestion is to set all the access points manually. 100 pieces are done in a couple of hours, :-)