The lower section includes...

[1] The currently selected tab section (it relates the particular function of the device ie: intercom)
[1a] The tabs to other functions of the device (they are split into categories of related functionalities)
TIP : If you want to add a PIN code, select PIN access. If you want to adjust the door release ie: select outputs. See event logs of usage, choose event log. If you are unsure what to click call us on +44(0)1273 257060 when on the screen.
[2] The various functions of the selected category (under Intercom, you will have all setting related to the intercom function)
TIP : If you want to see the event log, click the Event log tab
[2a] The other functions related within the selected category (some will not be relevant for the device you have)
TIP : The 1 way GSM intercoms like Alpha-3G use a GSM controller capable of 4 call buttons. This is why you see Button 2, 3 & 4. If you have a 1 way intercom, you only need to set numbers in Button 1.
[3] Other settings related to the selected category (the default settings are tuned for most applications)
TIP : Only change these settings if for example, the speaker volume is too low. Then go here to increase it.